CVE-2020-29003
CVE-2020-29003 is a medium-severity vulnerability in Mediawiki with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 5.4)
- CVSS v2: 3.5
- EPSS exploit prediction: 1% (40th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-79
- Affected product: Mediawiki
- Published:
- Last modified:
Description
The PollNY extension for MediaWiki through 1.35 allows XSS via an answer option for a poll question, entered during Special:CreatePoll or Special:UpdatePoll.
Frequently asked questions
- What is CVE-2020-29003?
- The PollNY extension for MediaWiki through 1.35 allows XSS via an answer option for a poll question, entered during Special:CreatePoll or Special:UpdatePoll.
- How severe is CVE-2020-29003?
- CVE-2020-29003 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2020-29003 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-29003?
- CVE-2020-29003 affects Mediawiki. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-29003?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-29003 published?
- CVE-2020-29003 was published on 2020-11-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
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