CVE-2026-109704VulnerabilityPublished 21 Oct 2026Updated 27 Oct 2026

SUSE · Security update for MozillaFirefox

Affects SUSESource GCVE Database

Mentioned vulnerabilities

Authoritative record:CVE-2026-109704· High 8.8

Not known to be exploited · CVSS 8.8 High.

Data as of 27 Oct 2026, 22:12 UTC

CVSS 3.1 base score

8.8High

How severe the flaw is on the 0–10 CVSS scale.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: Low: The attacker is authorized with (i.e., requires) privileges that provide basic user capabilities that could normally affect only settings and files owned by a user. Alternatively, an attacker with Low privileges may have the ability to cause an impact only to non-sensitive resources.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 13 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
SUSE Product Security Team SUSE	Affected <158 <153.5	Fixed in 158 153.5

Description

This update for MozillaFirefox fixes the following issues: Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493): - CVE-2026-109704: Privilege escalation in the Application Update component. - CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the Networking component. - CVE-2026-109706: Use-after-free in the Storage: IndexedDB component. - CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component. - CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component. - CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing component. - CVE-2026-109710: Use-after-free in the Graphics: Text component. - CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component. - CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component. - CVE-2026-109713: Use-after-free in the Crash Reporting component. - CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component. - CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component. - CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component. - CVE-2026-109718: Use-after-free in the XML component. - CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component. - CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component. - CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component. - CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component. - CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component. - CVE-2026-109724: Use-after-free in the DOM: Core & HTML component. - CVE-2026-109725: Use-after-free in the DOM: Core & HTML component. - CVE-2026-109726: Use-after-free in the SVG component. - CVE-2026-109727: Use-after-free in the Audio/Video component. - CVE-2026-109728: Use-after-free in the DOM: Animation component. - CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component. - CVE-2026-109730: Integer overflow in the Graphics component. - CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component. - CVE-2026-109732: Use-after-free in the DOM: Streams component. - CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component. - CVE-2026-109734: Mitigation bypass in the DOM: Security component. - CVE-2026-109736: Frame poisoning in the Layout component. - CVE-2026-109737: Mitigation bypass in the Enterprise Policies component. - CVE-2026-109738: Use-after-free in the Audio/Video: Playback component. - CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component. - CVE-2026-109741: Use-after-free in the Storage: Bucket File System component. - CVE-2026-109742: Information disclosure in the PDF Viewer component. - CVE-2026-109743: Privilege escalation in the Panning and Zooming component. - CVE-2026-109744: Other issue in the DOM: File component. - CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component. - CVE-2026-109751: Information disclosure in the Networking component. - CVE-2026-109752: Use-after-free in the DOM: Workers component. - CVE-2026-109753: Incorrect boundary conditions in the Layout component. - CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component. - CVE-2026-109756: Privilege escalation in the DOM: Navigation component. - CVE-2026-109757: Sandbox escape due to race condition in the Networking component. - CVE-2026-109759: Site isolation issue in the Networking component. - CVE-2026-109760: Mitigation bypass in the Networking: HTTP component. - CVE-2026-109762: Incorrect boundary conditions in the SVG component. - CVE-2026-109763: Mitigation bypass in the File Handling component. - CVE-2026-109764: Mitigation bypass in the Enterprise Policies component. - CVE-2026-109765: Race condition, use-after-free in the Graphics: Text component. - CVE-2026-109766: Mitigation bypass in the Enterprise Policies component. - CVE-2026-109767: Information disclosure in the Networking component. - CVE-2026-109770: Spoofing issue in the DOM: Web Serial component. - CVE-2026-109775: Denial-of-service in the WebRTC component. - CVE-2026-109776: Race condition in the XPCOM component. - CVE-2026-109777: Information disclosure in the Storage: IndexedDB component. - CVE-2026-109778: Privilege escalation in the WebExtensions component. - CVE-2026-109781: Denial-of-service in the Printing: Output component. - CVE-2026-109782: Mitigation bypass in the File Handling component. - CVE-2026-109783: Mitigation bypass in the File Handling component. libexpat updated: - CVE-2026-50219: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking in libexpat could lead to information disclosure, integrity loss, or denial of service (bsc#1275098).

GCVE source: db.gcve.eu
Csaf Category: csaf_security_advisory
Csaf Version: 2.0
Publisher: SUSE Product Security Team
Advisory ID: SUSE-SU-2026:4806-1
Vendor Severity: high
CVE Count: 85
Additional Cves: CVE-2026-109705, CVE-2026-109706, CVE-2026-109707, CVE-2026-109708, CVE-2026-109709, CVE-2026-109710, CVE-2026-109711, CVE-2026-109712, CVE-2026-109713, CVE-2026-109715, CVE-2026-109716, CVE-2026-109717, CVE-2026-109718, CVE-2026-109719, CVE-2026-109720, CVE-2026-109721, CVE-2026-109722, CVE-2026-109723, CVE-2026-109724, CVE-2026-109725, CVE-2026-109726, CVE-2026-109727, CVE-2026-109728, CVE-2026-109729, CVE-2026-109730, CVE-2026-109731, CVE-2026-109732, CVE-2026-109733, CVE-2026-109734, CVE-2026-109736, CVE-2026-109737, CVE-2026-109738, CVE-2026-109740, CVE-2026-109741, CVE-2026-109742, CVE-2026-109743, CVE-2026-109744, CVE-2026-109745, CVE-2026-109751, CVE-2026-109752, CVE-2026-109753, CVE-2026-109754, CVE-2026-109756, CVE-2026-109757, CVE-2026-109759, CVE-2026-109760, CVE-2026-109762, CVE-2026-109763, CVE-2026-109764, CVE-2026-109765, CVE-2026-109766, CVE-2026-109767, CVE-2026-109770, CVE-2026-109775, CVE-2026-109776, CVE-2026-109777, CVE-2026-109778, CVE-2026-109781, CVE-2026-109782, CVE-2026-109783, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-41080, CVE-2026-45186, CVE-2026-50219, CVE-2026-56131, CVE-2026-56132, CVE-2026-56403, CVE-2026-56404, CVE-2026-56405, CVE-2026-56406, CVE-2026-56407, CVE-2026-56408, CVE-2026-56409, CVE-2026-56410, CVE-2026-56411, CVE-2026-56412, CVE-2026-66046, CVE-2026-72522, CVE-2026-76641, CVE-2026-76956, CVE-2026-76957, CVE-2026-93990

References

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