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CVE-2011-1158

17
FAUCET Score

CVE-2011-1158 describes a Cross-Site Scripting (XSS) vulnerability in Universal Feed Parser (feedparser.py) versions 5.x prior to 5.0.1. This flaw allows remote attackers to inject arbitrary web script or HTML by crafting an unexpected URI scheme, such as a javascript: URI. The vulnerability has a CVSS score of 4.3 (Medium), indicating a network-based attack with medium complexity and potential for partial integrity impact. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
5.0CPE matchmatch criteria
cpe:2.3:a:mark_pilgrim:feedparser:5.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.3MEDIUM

AV:N/AC:M/Au:N/C:N/I:P/A:N

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.35%
Probability of exploitation in next 30 days
EPSS Percentile
81.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0235 is in the 71st percentile among its peer group of 19,954 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

pippatch availablevia ghsa
Product: feedparserFixed in: 5.0.1
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

pipGHSA-4m72-rmm9-2qjrmedium

feedparser Cross-site Scripting vulnerability

Jul 23, 2018

References

lists.opensuse.org / opensuse-updates/2011-04/msg00026.html
openwall.com / lists/oss-security/2011/03/14/18
Patch
openwall.com / lists/oss-security/2011/03/15/11
bugzilla.novell.com / show_bug.cgi
Patch
bugzilla.redhat.com / show_bug.cgi
Patch
code.google.com / p/feedparser/issues/detail
secunia.com / advisories/43730
Vendor Advisory
secunia.com / advisories/44074
Vendor Advisory
support.novell.com / security/cve/CVE-2011-1158.html
mandriva.com / security/advisories
securityfocus.com / bid/46867