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CVE Record

CVE-2019-12468: An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1.

An Incorrect Access Control vulnerability was found in Wikimedia MediaWiki 1.27.0 through 1.32.1. Directly POSTing to Special:ChangeEmail would allow for bypassing re-authentication, allowing for potential account takeover.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

MediaWiki sites running affected 1.27.0 through 1.32.1 releases could let a logged-in user change account email settings without the expected re-authentication step. Because email control often supports password reset or account recovery, the business risk is potential account takeover.

Executive priority

Treat as high priority for internet-facing or business-critical MediaWiki sites. The vulnerability targets account control rather than service availability, so the main concern is unauthorized access and follow-on compromise.

Technical view

CVE-2019-12468 is an incorrect access control flaw in MediaWiki. The source states that directly POSTing to Special:ChangeEmail could bypass re-authentication, creating account takeover risk. The bundle does not provide CVSS, CWE, exploit maturity, or exact fixed upstream versions.

Likely exposure

Exposure is likely limited to self-hosted MediaWiki deployments on versions 1.27.0 through 1.32.1, including distro-packaged MediaWiki covered by Debian DSA-4460. The provided affected CPE data is incomplete.

Exploitation context

The source bundle does not show active exploitation, and CISA KEV status is false. The issue is still important because it affects an account-management path and may undermine protections around email changes.

Researcher notes

Evidence is concise but consistent: the CVE description identifies the vulnerable endpoint behavior and affected version range, while Wikimedia and Debian references indicate coordinated security handling. Missing CVSS and fixed-version details reduce precision.

Mitigation direction

  • Identify all MediaWiki instances and their exact versions.
  • Apply the relevant Wikimedia or Debian MediaWiki security update.
  • Prioritize public, multi-user, or SSO-adjacent wiki deployments.
  • Review vendor advisories before relying on compensating controls.
  • Consider temporary access restrictions for account email-change workflows if patching is delayed.

Validation and detection

  • Confirm MediaWiki version is outside 1.27.0 through 1.32.1.
  • Verify Debian systems include the DSA-4460 MediaWiki security update where applicable.
  • Review account email-change logs for unusual timing, users, or source addresses.
  • Check whether privileged accounts changed email addresses before patching.
  • Document findings without attempting to reproduce the bypass in production.
Prepared
Confidence
medium
Sources
5

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2019-12468 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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