VulnerabilityPublished 29 Oct 2026

CVE-2026-48005: httpd security update

Affects httpdSource GCVE Database

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Authoritative record:CVE-2026-48005· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade to 2.4.58-25.oe2403sp4 soon.

Data as of 29 Oct 2026, 10:47 UTC

CVSS 3.1 base score

7.5High

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

EPSS: 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 2.4.58-25.oe2403sp4

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
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: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
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: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within 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 1 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 29 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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

Upgrade httpd to 2.4.58-25.oe2403sp4.

Affected software

Product	Affected	Fixed in
openEuler 24.03-LTS-SP4httpd`pkg:rpm/openEuler/httpd&distro=openEuler-24.03-LTS-SP4`Other threats	Affected <2.4.58-25.oe2403sp4	Fixed in 2.4.58-25.oe2403sp4

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade Apache HTTP Server to version 2.4.69 or later, which contains fixes for all described vulnerabilities. No other mitigations are indicated by the vendor advisory.

Description

Multiple security vulnerabilities exist in Apache HTTP Server mod_auth_digest before version 2.4.69. These include missing authentication checks allowing unauthenticated denial of service, authentication bypass via replay attacks under certain configurations, and use-after-free conditions causing authentication state corruption. All issues are resolved in version 2.4.69.

Impact

Successful exploitation can lead to denial of service by forcing re-authentication, authentication bypass through replay attacks, and authentication state corruption. These impacts affect confidentiality, integrity, and availability of the affected server. The CVSS 3.1 base score is 8.1 (high severity) with network attack vector, high impact on confidentiality, integrity, and availability, and no privileges or user interaction required.

Summary

Apache HTTP Server versions prior to 2.4.69 contain several vulnerabilities in the mod_auth_digest module. CVE-2026-48005 describes missing authentication checks when Digest authentication with AuthDigestNcCheck is enabled, allowing unauthenticated remote clients to cause denial of service via forced re-authentication using forged Authorization headers. CVE-2026-73636 involves an authentication bypass by replay attack in 2.4.x when AuthDigestNonceLifetime is set to 0, enabling a man-in-the-middle attacker to replay captured digest credentials by triggering garbage collection of the client's shared memory entry. CVE-2026-73637 is a use-after-free vulnerability allowing unauthenticated remote clients to corrupt authentication state through concurrent Digest authentication requests when AuthDigestNcCheck is enabled or AuthDigestNonceLifetime is 0. All these vulnerabilities are fixed in Apache HTTP Server version 2.4.69.

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What to do

Affected software

Description

AI analysisMachine-generated, updated 29 Oct 2026, 10:47 UTC

Technical details

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