Is CVE-2021-30158 in the CISA KEV catalog?

No. CVE-2021-30158 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30158?

CVE-2021-30158 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-30158?

CVE-2021-30158 has an EPSS score of 1.73% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30158?

Upgrade mediawiki on debian 11 to 1:1.35.2-1 or later.

CVE & CISA-KEV Catalog

CVE-2021-30158

MEDIUMEPSS 75th pctl

5.3

CVSS v3

NVD

Description

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Blocked users are unable to use Special:ResetTokens. This has security relevance because a blocked user might have accidentally shared a token, or might know that a token has been compromised, and yet is not able to block any potential future use of the token by an unauthorized party.

CWE-287Improper Authentication

How to fix

Remediation Available

mediawikiDebian

Fixed in:1:1.35.2-1CVE-2021-30158

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.73%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch1

phabricator.wikimedia.org

Third-Party Advisory4

Other references2

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.