CVE-2022-39280

Name: CVE-2022-39280
Creator: NVD / NIST
Published: 2022-10-06T18:16:18.007+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.98%

Last modified Jun 17, 2026

CVE-2022-39280 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is vulnerable to a Regular Expression Denial of Service. EPSS estimates a 0.98% chance of exploitation in the next 30 days.

Description

dparse is a parser for Python dependency files. dparse in versions before 0.5.2 contain a regular expression that is vulnerable to a Regular Expression Denial of Service. All the users parsing index server URLs with dparse are impacted by this vulnerability. A patch has been applied in version `0.5.2`, all the users are advised to upgrade to `0.5.2` as soon as possible. Users unable to upgrade should avoid passing index server URLs in the source file to be parsed.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

0.98%

57.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Pyup	Dependency Parser	< 0.5.1

References

https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5Patch, Third Party Advisory
https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614Patch, Third Party Advisory
https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pqThird Party Advisory
https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoSTechnical Description, Third Party Advisory
https://github.com/pyupio/dparse/commit/8c990170bbd6c0cf212f1151e9025486556062d5Patch, Third Party Advisory
https://github.com/pyupio/dparse/commit/d87364f9db9ab916451b1b036cfeb039e726e614Patch, Third Party Advisory
https://github.com/pyupio/dparse/security/advisories/GHSA-8fg9-p83m-x5pqThird Party Advisory
https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoSTechnical Description, Third Party Advisory

Timeline

Published: Oct 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39280?

How severe is CVE-2022-39280?

CVE-2022-39280 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39280?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39280?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST