PT-2026-21359 · Foswiki · Foswiki

Jan Seebens + 1 · Published 2026-02-21 · Updated 2026-03-16 · CVE-2026-2861

Positive Technologies (AI Summary)

CVSS v4.0

5.5

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions Foswiki versions prior to 2.1.11

Description A flaw exists in Foswiki that allows information disclosure. The issue is located within an unknown function of the Changes/Viewfile/Oops component. This can be exploited remotely. The exploit is publicly available.

Recommendations Upgrade to version 2.1.11 or later.

Fix

Improper Access Control

Information Disclosure

Weakness Enumeration

CWE-284

CWE-200

Related Identifiers

CVE-2026-2861

Affected Products

Foswiki

References · 16

• https://github.com/foswiki/distro/commit/31aeecb58b64 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-2861 · Security Note
• https://osv.dev/vulnerability/CVE-2026-2861 · Vendor Advisory
• https://t.me/cveNotify/155516 · Telegram Post
• https://twitter.com/oss_security/status/2033366043754668377 · Twitter Post
• http://openwall.com/lists/oss-security/2026/03/16/1 · Note
• https://t.me/CVEtracker/45355 · Telegram Post
• https://foswiki.org/Tasks/Item15600 · Note
• https://vuldb.com/?submit.753966 · Note
• https://vuldb.com/?id.347101 · Note
• https://foswiki.org/Tasks/Item15601 · Note
• http://openwall.com/lists/oss-security/2026/03/15/1 · Note
• http://openwall.com/lists/oss-security/2026/03/16/3 · Note
• https://vuldb.com/?ctiid.347101 · Note
• https://twitter.com/CVEnew/status/2025154182282391878 · Twitter Post