CVE-2026-123857VulnerabilityPublished 8 Nov 2026

JetBrains PhpStorm: Mehrere Schwachstellen

Affects Bundesamt für Sicherheit in der Informationstechnik JetBrainsSource GCVE Database

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Authoritative record:CVE-2026-123857· Medium 4.3

Not known to be exploited · CVSS 4.3 Medium : upgrade to 2026.3 when convenient.

Data as of 9 Nov 2026, 12:36 UTC

CVSS 3.1 base score

4.3Medium

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

Thin evidence

One scorer or none

CVSS scores by source
CNA (JetBrains)	CVSS 3.1	4.3

Patch: Available – fixed in 2026.3

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

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

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: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
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: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Nov 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 9 Nov 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.

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What to do

Upgrade PhpStorm to 2026.3.

Affected software

Product	Affected	Fixed in
JetBrainsPhpStorm	Affected <2026.3	Fixed in 2026.3

AI-suggested

Users should update to PhpStorm version 2026.3, where the vulnerabilities have been fixed. No additional mitigation actions are indicated.

Description

Multiple vulnerabilities have been identified in JetBrains PhpStorm, a PHP integrated development environment (IDE). These issues affect versions prior to and including 2026.3. The vulnerabilities have been addressed in version 2026.3.

Impact

The vulnerabilities potentially impact users running PhpStorm versions prior to and including 2026.3. The exact nature and severity of the impact are not detailed in the available information. No known exploitation in the wild has been reported.

Summary

JetBrains PhpStorm, a PHP IDE, contains multiple security vulnerabilities affecting versions before and including 2026.3. The vendor has fixed these vulnerabilities in version 2026.3. No CVSS score or detailed technical impact information is provided. There is no indication of active exploitation in the wild.

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 9 Nov 2026, 12:36 UTC

Technical details

References

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