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VulnerabilityPublished Updated

CVE-2026-103048: mediawiki · Open Redirect

Affects mediawikiSource GCVE Database

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Authoritative record:CVE-2026-103048· Medium 6.1

Not known to be exploited · CVSS 6.1 Medium.

Data as of 11 Nov 2026, 23:24 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 3% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 29 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 13 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10mediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=stonkingOther threatsAffected
  • =1:1.43.8+dfsg-2
  • =1:1.43.9+dfsg-1
  • =1:1.43.9+dfsg-1ubuntu1
Fixed in–
Ubuntu 26.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=resoluteOther threatsAffected
  • 1:1.43.3+dfsg-1 – 1:1.43.8+dfsg-2
5 affected builds
Fixed in–
Ubuntu Pro 24.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/nobleOther threatsAffected
  • 1:1.39.4-2 – 1:1.39.7-1ubuntu0.1~esm1
5 affected builds
Fixed in–
Ubuntu Pro 22.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/jammyOther threatsAffected
  • 1:1.35.3-1 – 1:1.35.6-1ubuntu0.1~esm1
8 affected builds
Fixed in–
Ubuntu Pro 20.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=esm-apps/focalOther threatsAffected
  • 1:1.31.2-1ubuntu1 – 1:1.31.7-1ubuntu0.1~esm1
9 affected builds
Fixed in–
Ubuntu 18.04 LTSmediawikipkg:deb/ubuntu/mediawiki?arch=source&distro=bionicOther threatsAffected
  • 1:1.27.3-1 – 1:1.27.4-3
4 affected builds
Fixed in–

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

AI-suggested

No explicit patch or remediation link is provided in the input data. Users should upgrade the Mediawiki Collection extension to versions 1.46.1, 1.45.5, or 1.43.10 or later once available. Until patched, administrators should consider restricting or monitoring URLs used in redirects and educate users about the risks of clicking on unexpected links.

Description

An open redirect vulnerability (CVE-2026-103048) exists in the Mediawiki Collection extension before versions 1.46.1, 1.45.5, and 1.43.10. This flaw allows attackers to redirect users to untrusted sites, which could be used to facilitate phishing or spoofing attacks by faking the source of data. The vulnerability has a medium severity with a CVSS score of 6.1.

References

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