CVE-2011-1157
feedparser Cross-site Scripting vulnerability
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
Exploit likelihood
What each source reports
NVD Score used
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
CVE-2011-1157- CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE List No score
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
CVE-2011-1157- Updated
- 2026-11-02
EUVDEUVD-2011-0015 No score
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
EUVD-2011-0015- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2p78-8hh6-96xc
feedparser Cross-site Scripting vulnerability
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
GHSA-2p78-8hh6-96xc- CVSS 4.0
- 5.3 Medium
CVSS: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 Medium
CVSS: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-2p78-8hh6-96xc
feedparser Cross-site Scripting vulnerability
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
GHSA-2p78-8hh6-96xc- CVSS 4.0
- 5.3 Medium
CVSS: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 Medium
CVSS: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
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
CVE-2011-1157- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-1157 No score
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
DEBIAN-CVE-2011-1157- Updated
- 2026-11-02
OSVPYSEC-2011-20 No score
Cross-site scripting (XSS) vulnerability in feedparser.py in Universal Feed Parser (aka feedparser or python-feedparser) 5.x before 5.0.1 allows remote attackers to inject arbitrary web script or HTML via malformed XML comments.
- Record
PYSEC-2011-20- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
feedparserPyPI |
5.0 up to 5.0.1 | 5.0.1 |
feedparserDebian:12 |
before 5.0.1-1 | 5.0.1-1 |
feedparserDebian:13 |
before 5.0.1-1 | 5.0.1-1 |
feedparserDebian:14 |
before 5.0.1-1 | 5.0.1-1 |
feedparserPyPI |
before 5.0.1, plus listed versions 4.15.0 |
5.0.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-1157 is a medium vulnerability (CVSS 4.3) in Mark Pilgrim Feedparser, published April 11, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.46%, the 84th percentile. Fixed in feedparser 5.0.1.
References
openwall.com/lists/oss-security/2011/03/14/18
code.google.com/p/feedparser/issues/detail?id=254
secunia.com/advisories/43730
support.novell.com/security/cve/CVE-2011-1157.html
securityfocus.com/bid/46867
bugzilla.redhat.com/show_bug.cgi?id=684877
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lists.opensuse.org/opensuse-updates/2011-04/msg00026.html
bugzilla.novell.com/show_bug.cgi?id=680074
mandriva.com/security/advisories?name=MDVSA-2011:082
nvd.nist.gov/vuln/detail/CVE-2011-1157
github.com/advisories/GHSA-2p78-8hh6-96xc
web.archive.org/web/20210121212051/https://www.securityfocus.com/bid/46867
security-tracker.debian.org/tracker/CVE-2011-1157