CVE-2026-2861
Foswiki Changes/Viewfile/Oops information disclosure
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.
INFO
Published Date :
Feb. 21, 2026, 6:17 a.m.
Last Modified :
March 16, 2026, 4:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Upgrade Foswiki to version 2.1.11.
- Apply the provided patch to the affected component.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-2861.
| URL | Resource |
|---|---|
| https://foswiki.org/Tasks/Item15600 | Permissions Required |
| https://foswiki.org/Tasks/Item15601 | Permissions Required |
| https://github.com/foswiki/distro/commit/31aeecb58b64 | Patch |
| https://vuldb.com/?ctiid.347101 | Permissions Required VDB Entry |
| https://vuldb.com/?id.347101 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.753966 | Third Party Advisory VDB Entry |
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-2861 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-2861
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-2861 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-2861 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Mar. 16, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/03/16/3 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Mar. 16, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/03/15/1 Added Reference http://www.openwall.com/lists/oss-security/2026/03/16/1 -
Initial Analysis by [email protected]
Feb. 26, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:foswiki:foswiki:*:*:*:*:*:*:*:* versions up to (excluding) 2.1.11 Added Reference Type VulDB: https://foswiki.org/Tasks/Item15600 Types: Permissions Required Added Reference Type VulDB: https://foswiki.org/Tasks/Item15601 Types: Permissions Required Added Reference Type VulDB: https://github.com/foswiki/distro/commit/31aeecb58b64 Types: Patch Added Reference Type VulDB: https://vuldb.com/?ctiid.347101 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.347101 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.753966 Types: Third Party Advisory, VDB Entry -
New CVE Received by [email protected]
Feb. 21, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CWE CWE-200 Added CWE CWE-284 Added Reference https://foswiki.org/Tasks/Item15600 Added Reference https://foswiki.org/Tasks/Item15601 Added Reference https://github.com/foswiki/distro/commit/31aeecb58b64 Added Reference https://vuldb.com/?ctiid.347101 Added Reference https://vuldb.com/?id.347101 Added Reference https://vuldb.com/?submit.753966