CVE-2019-20838libpcre 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.
Updated under an hour ago ()
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It affects pcre and 2 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mitre
- NVD analysis
- Modified
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
pcre pcre pcre:pcre | before 8.43 | NVD |
apple macos apple:macos | before 11.0.1 | NVD |
splunk universal_forwarder splunk:universal_forwarder | from 8.2.0 before 8.2.12; from 9.0.0 before 9.0.6; 9.1.0 | NVD |
References
- https://bugs.gentoo.org/717920x-refsource-misc
- https://www.pcre.org/original/changelog.txtx-refsource-misc
- https://support.apple.com/kb/HT211931x-refsource-confirm
- http://seclists.org/fulldisclosure/2020/Dec/32mailing-list, x-refsource-fulldisc
- https://support.apple.com/kb/HT212147x-refsource-confirm
- http://seclists.org/fulldisclosure/2021/Feb/14mailing-list, x-refsource-fulldisc
- https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3Emailing-list, x-refsource-mlist
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.