CVE-2026-2861

Foswiki Changes/Viewfile/Oops information disclosure

State: Published
Severity: 6.9 Medium
Published: Feb 21, 2026
Updated: Mar 16, 2026
Reserved: Feb 20, 2026

Description

A vulnerability was detected in Foswiki up to 2.1.10. The affected element is an unknown function of the component Changes/Viewfile/Oops. The manipulation results in information disclosure. It is possible to launch the attack remotely. The exploit is now public and may be used. Upgrading to version 2.1.11 is sufficient to fix this issue. The patch is identified as 31aeecb58b64/d8ed86b10e46. Upgrading the affected component is recommended.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P	VulDB
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C	VulDB
3.0	5.3 Medium	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:P/I:N/A:N/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-200 Information Disclosure
CWE-284 Improper Access Controls

Affected Products

Product	Versions
Foswikin/a	2.1.0Affected 2.1.1Affected 2.1.2Affected 2.1.3Affected 2.1.4Affected 2.1.5Affected 2.1.6Affected 2.1.7Affected 2.1.8Affected 2.1.9Affected 2.1.10Affected 2.1.11Not affected

References

VDB-347101 | Foswiki Changes/Viewfile/Oops information disclosurevdb-entry
VDB-347101 | CTI Indicators (IOB, IOC, TTP)signaturepermissions-required
Submit #753966 | Foswiki 2.1.10 and before Information Disclosurethird-party-advisory
https://foswiki.org/Tasks/Item15600related
https://foswiki.org/Tasks/Item15601related
https://github.com/foswiki/distro/commit/31aeecb58b64patch
http://www.openwall.com/lists/oss-security/2026/03/15/1
http://www.openwall.com/lists/oss-security/2026/03/16/1
http://www.openwall.com/lists/oss-security/2026/03/16/3

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