Read the docs
TI-2026-80986 Aliases CVE-2026-116822GHSA-56wp-34hq-q74f

Path traversal in YesWiki BazarListeAction lets attackers select templates

Priority LOW 36CWE-73Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

YesWiki before 4.7.0 contains a path traversal flaw in BazarListeAction. An unauthenticated remote attacker can select arbitrary templates within the @bazar Twig namespace through the template GET parameter. Attackers can append crafted template values to pages with the bazarliste action to force unintended layouts, defacing pages for visitors who follow the crafted link.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

YesWiki before 4.7.0 contains a path traversal vulnerability in BazarListeAction that allows unauthenticated attackers to select arbitrary templates within the @bazar Twig namespace via the template GET parameter. Attackers can append crafted template values to pages containing the bazarliste action to force unintended layouts, causing page defacement for visitors following the crafted link.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0021 11th percentileScored 2026-11-07
Fix Fixed yeswiki (YesWiki): 4.7.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YesWikiyeswikibefore 4.7.04.7.0Patch availableCNA
  • yeswiki VendorYesWiki Affected before 4.7.0 Fixed in 4.7.0 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:*——YesWiki
  • cpe:2.3:a:yeswiki:yeswiki:*:*:*:*:*:*:*:* Versions — — ·YesWiki

Remediation

Upgrade YesWiki to version 4.7.0 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA yeswiki (YesWiki) Fixed in 4.7.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    yeswiki 4.7.0

    9 records Highest priority Priority HIGH 3 HIGH, 4 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-80984 SQL query disclosure in YesWiki via showreq parameterPriority HIGH 70
    • TI-2026-80991 Server-side request forgery in YesWiki Bazar CSV importPriority HIGH 69
    • TI-2026-80989 HTTP Signature replay in YesWiki ActivityPub inbox allows repeated actionsPriority HIGH 69
    Show all 9 records →

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-116822
  2. 2026-10-27 CISA SSVC decision points changed
  3. 2026-10-27 Priority changed: MEDIUM → LOW
  4. 2026-10-27 Alias added: GHSA-56wp-34hq-q74f

References

Advisory 1

  • TI-2026-37893 YesWiki has Unsafe eval() in Formula Calculator - Remote Code Execution (RCE) & Denial of Service (DoS) CVSS 3.1CRITICAL 9.8
  • TI-2026-34305 YesWiki: Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
  • TI-2025-29089 YesWiki Vulnerable to Unauthenticated Site Backup Creation and Download CVSS 3.1CRITICAL 10.0
  • TI-2024-34399 Use of a Broken or Risky Cryptographic Algorithm in YesWiki CVSS 3.1CRITICAL 9.9
  • TI-2026-37882 YesWiki: Unauthenticated arbitrary page deletion via `{{erasespamedcomments}}` action CVSS 3.1CRITICAL 9.1
  • TI-2026-80227 SQL injection in YesWiki Bazar entry creation via date_maj_fiche CVSS 4.0HIGH 8.8
See all 85 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences