What is CVE-2022-34750?

CVE-2022-34750 is a high-severity vulnerability in Mediawiki, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-28.

How severe is CVE-2022-34750?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Mediawiki

CVE-2022-34750

An issue was discovered in MediaWiki through 1.38.1. The lemma length of a Wikibase lexeme is currently capped at a thousand characters. Unfortunately, this length is not validated, allowing much larger lexemes to be created, which introduces various denial-of-service attack vectors within the Wikibase and WikibaseLexeme extensions. This is related to Special:NewLexeme and Special:NewProperty.

EPSS: 0.012 (65.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mediawiki
N/a — versions n/a

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

cve@mitre.org (Mailing List, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)
cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2022-34750?: CVE-2022-34750 is a high-severity vulnerability in Mediawiki, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2022-06-28.
How severe is CVE-2022-34750?: High severity. CVSS v3 base score is 7.5 out of 10.