Arbitrary file upload in Pygments
CVE-2022-40896
A ReDoS issue was discovered in pygments/lexers/smithy.py in pygments through 2.15.0 via SmithyLexer.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (44.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- pypi.org/project/Pygments/ (Product)
- github.com/pygments/pygments/blob/master/pygments/lexers/smithy.py (Third Party Advisory)
- pyup.io/posts/pyup-discovers-redos-vulnerabilities-in-top-python-packages-part-… (Exploit, Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-40896?
- CVE-2022-40896 is a medium-severity vulnerability in Pygments, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 5.5/10. Published 2023-07-19.
- How severe is CVE-2022-40896?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2022-40896 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.