Server side template inject (SSTI) in Edgewall Genshi Template Engine
Priority MEDIUM 51Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Server side template inject (SSTI) in the expression evaluation component in Genshi Template Engine version 0.7.9 allows a remote attacker to achieve remote code execution (RCE) via crafted template expressions.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00926 60th 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
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Edgewall *Genshi* | Genshi | up to 0.7.9 | — | No fix listed | CNA |
- Genshi VendorEdgewall *Genshi* Affected up to 0.7.9 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat Enterprise Linux 6
Timeline
- 2026-10-02 Threatist record created from CVE-2026-0685
- 2026-10-03 Alias added: GHSA-4r2j-8c42-5wfc
References
Sources
- CVE-2026-0685 · CVE Program
- CVE-2026-0685 · NVD
- FIRST EPSS
- GHSA-4r2j-8c42-5wfc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-0685 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences