VulnerabilityModified

CVE-2021-20270

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

HIGH 7.5EPSS 2.76%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.76%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 2.76% probability · 85th percentile
CISA KEV: Not listed
Weakness: CWE-835
Affected: pygments/pygments · redhat/openshift container platform · redhat/openstack platform · redhat/software collections · redhat/enterprise linux · fedoraproject/fedora · debian/debian linux
Source: secalert@redhat.com

References

https://bugzilla.redhat.com/show_bug.cgi?id=1922136Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2021/dsa-4889Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlNot Applicable, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1922136Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00003.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00006.htmlMailing List, Third Party Advisory
https://www.debian.org/security/2021/dsa-4889Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.htmlNot Applicable, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.