CVE-2026-4539
python-Pygments: Denial of Service via inefficient regular expression processing in AdlLexer (bsc#1260796).
CVE-2026-4539 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-4539, released March 22, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0016
5th percentile
Denial of Service via inefficient regular expression processing in AdlLexer (bsc#1260796).
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| pygments · Debian 14 | 2.20.0+dfsg-1 | DEBIAN-CVE-2026-4539 | Mar 22, 2026 |
| python-Pygments · opensuse-leap 16.0 | 2.19.1-160000.3.1 | OPENSUSE-SU-2026:20931-1 | Jun 9, 2026 |
| python-Pygments · sles 16.0 | 2.19.1-160000.3.1 | SUSE-SU-2026:22093-1 | Jun 9, 2026 |
| python3-pygments · amzn 2023 | 2.7.4-1.amzn2023.0.3 | ALAS2023-2026-1973 | Jul 20, 2026 |
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