A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.
Priority MEDIUM 53CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
A use-after-free vulnerability exists in DOMProxyHandler::EnsureExpandoObject in Pale Moon before 27.9.3.
Why it matters now
EPSS 0.08751 95th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-12292
- 2026-10-03 Alias added: GHSA-r5hq-fqrw-h33h
References
Exploit 1
More Palemoon Pale Moon vulnerabilities
- TI-2013-01398 Stack-based buffer overflow in libpixman, as used in Pale Moon before 15.4 and possibly… CVSS 3.1CRITICAL 9.8
- TI-2020-07633 Pale Moon 28.x before 28.8.4 has a segmentation fault related to module scripting, as… CVSS 3.1HIGH 7.5
Sources
- CVE-2018-12292 · CVE Program
- CVE-2018-12292 · NVD
- FIRST EPSS
- GHSA-r5hq-fqrw-h33h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences