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  4. CVE 2026 104458 yeswiki before 467 ssrf guard bypass via ipv6
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Back to active CVEs
High · CVSS 8.3CVE-2026-104458

YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses

Answer in brief

CVE-2026-104458 records a High severity (CVSS 8.3) vulnerability in YesWiki before 4.6.7 SSRF Guard Bypass via IPv6 Transition Addresses. The current sources do not mark it as known exploited. The current feed maps YesWiki/yeswiki (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 2, 2026Updated Oct 2, 2026Source checked Oct 2, 2026First seen by HOL Oct 2, 2026Material review Oct 2, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.3
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps YesWiki/yeswiki (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
YesWiki/yeswikigeneric>=0 <4.6.74.6.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for YesWiki/yeswiki.
  2. 2Review the reported fix. Update YesWiki/yeswiki to 4.6.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 2, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 2, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

YesWiki before 4.6.7 contains a server-side request forgery vulnerability in validateKeyIdUrl() that allows unauthenticated attackers to bypass the SSRF guard using 6to4, NAT64, or IPv4-compatible IPv6 addresses. Attackers can send a crafted Signature keyId to the public actor inbox route to reach cloud metadata, loopback services, or internal hosts.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WordPress ThemeREX Addons plugin <= 2.46.0 - Server Side Request Forgery (SSRF) vulnerabilityAlso CWE-918
  • Next.js: Server-Side Request Forgery in Image OptimizationAlso CWE-918
  • WordPress ThemeREX Addons plugin <= 2.46.0 - Cross Site Scripting (XSS) vulnerabilitySame generic ecosystem
  • CISA ADP VulnrichmentSame generic ecosystem
  • Tenda AC9 POST Request fast_setting_internet_set stack-based overflowSame generic ecosystem
  • SourceCodester Student Result Management System Announcement new_announcement.php cross site scriptingSame generic ecosystem

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 2, 2026
References
2 linked sources
Open source record