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High 7.5Published Jun 15, 2020

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 ()

Does this affect you?

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.

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

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

  • x-refsource-misc
  • x-refsource-misc
  • x-refsource-confirm
  • mailing-list, x-refsource-fulldisc
  • x-refsource-confirm
  • mailing-list, x-refsource-fulldisc
  • mailing-list, x-refsource-mlist

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.

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