Integer overflow in the PCRE regular expression compiler…
Priority LOW 38CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
Integer overflow in the PCRE regular expression compiler (JavaScriptCore/pcre/pcre_compile.cpp) in Apple WebKit, as used in Safari before 3.1.1, allows remote attackers to execute arbitrary code via a regular expression with large, nested repetition counts, which triggers a heap-based buffer overflow.
Why it matters now
EPSS 0.04752 91st percentileScored 2026-11-07
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
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:apple:mac_os_x:10.4.11:*:*:*:*:*:*:* | 10.4.11 | Running on | Apple |
| cpe:2.3:o:apple:mac_os_x:10.5.2:*:*:*:*:*:*:* | 10.5.2 | Running on | Apple |
| cpe:2.3:o:apple:mac_os_x_server:10.4.11:*:*:*:*:*:*:* | 10.4.11 | Running on | Apple |
| cpe:2.3:o:apple:mac_os_x_server:10.5.2:*:*:*:*:*:*:* | 10.5.2 | Running on | Apple |
| cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:* | all versions | Running on | Microsoft |
| cpe:2.3:a:apple:safari:3:*:*:*:*:*:*:* | 3 | Vulnerable | Apple |
| cpe:2.3:a:apple:safari:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | Apple |
- cpe:2.3:o:apple:mac_os_x:10.4.11:*:*:*:*:*:*:* Versions 10.4.11 Running on ·Apple
- cpe:2.3:o:apple:mac_os_x:10.5.2:*:*:*:*:*:*:* Versions 10.5.2 Running on ·Apple
- cpe:2.3:o:apple:mac_os_x_server:10.4.11:*:*:*:*:*:*:* Versions 10.4.11 Running on ·Apple
- cpe:2.3:o:apple:mac_os_x_server:10.5.2:*:*:*:*:*:*:* Versions 10.5.2 Running on ·Apple
- cpe:2.3:o:microsoft:windows_vista:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
- cpe:2.3:a:apple:safari:3:*:*:*:*:*:*:* Versions 3 Vulnerable ·Apple
- cpe:2.3:a:apple:safari:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Apple
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2008-1026
- 2026-10-03 Alias added: GHSA-x8jx-f436-2vp7
References
More Apple Safari vulnerabilities
- TI-2025-17951 Out-of-bounds write in Apple Safari KEVCVSS 3.1CRITICAL 10.0
- TI-2025-28228 Use after free in Apple Safari KEVCVSS 3.1HIGH 8.8
- TI-2025-22512 Memory corruption in Apple Safari KEVCVSS 3.1HIGH 8.8
- TI-2025-12953 Memory corruption in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2025-05957 Improper input validation in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2024-29863 Apple Safari: Processing maliciously crafted web content may lead to arbitrary code… KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2008-1026 · CVE Program
- CVE-2008-1026 · NVD
- FIRST EPSS
- GHSA-x8jx-f436-2vp7 · GitHub Advisory Database · CC BY 4.0
- CVE-2008-1026 · 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