CVE-2026-58517 — MEDIUM (4.3)

Q: How severe is CVE-2026-58517?

CVE-2026-58517 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-58517?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.

Vulnerability Description

Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extension: from * before 1.43.9,1.44.6,1.45.4.

CVSS Score

4.3

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Mediawiki	Mediawiki	>= 1.43.0, < 1.43.9

Related Weaknesses (CWE)

CWE-288

References

https://gerrit.wikimedia.org/r/c/1305376Issue Tracking
https://phabricator.wikimedia.org/T428833Issue TrackingVendor Advisory

FAQ

What is CVE-2026-58517?

CVE-2026-58517 is a vulnerability with a CVSS score of 4.3 (MEDIUM). Improper neutralization of input terminators vulnerability in The Wikimedia Foundation Mediawiki - WikiLambda Extension allows Authentication Bypass. This issue affects Mediawiki - WikiLambda Extensi...

How severe is CVE-2026-58517?

CVE-2026-58517 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-58517?

Check the references section above for vendor advisories and patch information. Affected products include: Mediawiki Mediawiki.