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CVE-2026-2861

Foswiki Changes/Viewfile/Oops information disclosure

MEDIUM
5.3
CVSS Score
Published: February 21, 2026 at 06:02 AM UTC
Updated: June 17, 2026 at 10:31 AM UTC
1 product affected across 1 vendorFoswiki

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Severity
MEDIUM5.3
Exploit prediction
EPSS 0.5%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Foswiki· Foswiki
95%
v < 2.1.112.1.02.1.12.1.102.1.22.1.32.1.42.1.52.1.62.1.72.1.82.1.9
Vendor states this is fixed in 2.1.11 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (9)

VDB EntryThird Party Advisory
Source: cverecord
https://vuldb.com/?id.347101
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/?ctiid.347101
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/?submit.753966
RelatedPermissions Required
Source: cverecord
https://foswiki.org/Tasks/Item15600
RelatedPermissions Required
Source: cverecord
https://foswiki.org/Tasks/Item15601
Patch
Source: cverecord
https://github.com/foswiki/distro/commit/31aeecb58b64
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/03/15/1
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2026/03/16/1

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVulDB
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-200CWE-284NVD-CWE-noinfo

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