Disclosure summary
libpcre in PCRE before 8.43 allows a subject buffer over-read in JIT when UTF is disabled, and \X or \R has more than one fixed quantifier, a related issue to CVE-2019-20454.
Source-reported weakness categories
CWE-125
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2019-20838
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| pcre | pcre | * {"versionEndExcluding":"8.43"} |
| apple | macos | * {"versionEndExcluding":"11.0.1"} |
| splunk | universal_forwarder | * {"versionStartIncluding":"9.0.0","versionEndExcluding":"9.0.6"} |
| splunk | universal_forwarder | 9.1.0 |
Original records & references
- NIST NVD record
- CVE Program record
- bugs.gentoo.org — Issue Tracking, Patch, Third Party Advisory, VDB Entry
- lists.apache.org — Mailing List, Third Party Advisory
- support.apple.com — Vendor Advisory
- support.apple.com — Vendor Advisory
- www.pcre.org — Release Notes, Vendor Advisory
- bugs.gentoo.org — Issue Tracking, Patch, Third Party Advisory, VDB Entry
- lists.apache.org — Mailing List, Third Party Advisory
- support.apple.com — Vendor Advisory
- support.apple.com — Vendor Advisory
- www.pcre.org — Release Notes, Vendor Advisory
PUBLISHED 2020-06-15T13:15:09-04:00
MODIFIED 2026-10-08T18:16:54-04:00
INGESTED 2026-10-10T20:50:19-04:00