Authentication Bypass via URI Traversal
Priority MEDIUM 40CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
An unauthenticated remote attacker can bypass authentication by exploiting insufficient URI validation and using path traversal sequences (e.g., /js/../cgi-bin/post.cgi), gaining unauthorized access to protected CGI endpoints and configuration downloads.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00696 53rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-22905
- 2026-10-03 Alias added: GHSA-q9j9-8wv2-gff4
- 2026-10-07 EPSS moved to the 50th–90th percentile
References
More WAGO vulnerabilities
- TI-2023-01594 WAGO: WBM Command Injection in multiple products CVSS 3.1CRITICAL 9.8
- TI-2020-06893 eap.c in pppd in ppp 2.4.2 through 2.4.8 has an rhostname buffer overflow in the eap_request and eap_response functions. CVSS 3.1CRITICAL 9.8
- TI-2018-09314 An issue was discovered on WAGO e!DISPLAY 762-3000 through 762-3003 devices with firmware… CVSS 3.1HIGH 8.8
- TI-2025-18921 Unauthenticated File Read via Web Interface CVSS 3.1MEDIUM 4.9
- TI-2026-18391 Stack Overflow via Oversized Cookie Fields in lighttpd CVSS 3.1CRITICAL 9.8
- TI-2026-18390 Stack Overflow via SESSIONID Cookie in lighttpd CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-22905 · CVE Program
- CVE-2026-22905 · NVD
- FIRST EPSS
- GHSA-q9j9-8wv2-gff4 · GitHub Advisory Database · CC BY 4.0
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