CVE-2010-2477

Paste is vulnerable to Cross-site Scripting via vectors involving a 404 status code

4.3 MediumFix available

Multiple cross-site scripting (XSS) vulnerabilities in the paste.httpexceptions implementation in Paste before 1.7.4 allow remote attackers to inject arbitrary web script or HTML via vectors involving a 404 status code, related to (1) paste.urlparser.StaticURLParser, (2) paste.urlparser.PkgResourcesParser, (3) paste.urlmap.URLMap, and (4) HTTPNotFound.

Exploit likelihood

2.29%Up 0.5 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2010-2477
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2010-2477
Updated: 2026-11-02

EUVDEUVD-2010-0012 No score

Record: EUVD-2010-0012
Updated: 2026-11-03

GitHub AdvisoriesGHSA-7gfc-2v6g-6w9f 5.3

Paste is vulnerable to Cross-site Scripting via vectors involving a 404 status code

Record: GHSA-7gfc-2v6g-6w9f
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVGHSA-7gfc-2v6g-6w9f 5.3

Paste is vulnerable to Cross-site Scripting via vectors involving a 404 status code

Record: GHSA-7gfc-2v6g-6w9f
CVSS 4.0: 5.3 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1: 6.1 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSV No score

Record: CVE-2010-2477
Updated: 2026-11-02

OSVDEBIAN-CVE-2010-2477 No score

Record: DEBIAN-CVE-2010-2477
Updated: 2026-11-02

OSVPYSEC-2010-29 No score

Record: PYSEC-2010-29
Updated: 2026-11-02

Affected products

pythonpaste paste

Affected packages

Affected packages
Package	Affected	Fixed
`paste` PyPI	before 1.7.4	1.7.4
`paste` Debian:12	before 1.7.4-1	1.7.4-1
`paste` Debian:13	before 1.7.4-1	1.7.4-1
`paste` Debian:14	before 1.7.4-1	1.7.4-1
`paste` PyPI	before 1.7.4, plus listed versions 0.30.40.4.10.50.9 Show 26 moreShow less 0.9.10.9.20.9.30.9.50.9.60.9.70.9.80.9.8.11.01.0.11.11.1.11.21.2.11.31.41.4.11.4.21.51.5.11.61.71.7.11.7.21.7.31.7.3.1	1.7.4

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-2477 is a medium vulnerability (CVSS 4.3) in Pythonpaste Paste, published November 5, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.29%, the 83rd percentile. Fixed in paste 1.7.4.

References

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