CVE-2011-1157 json
feedparser Cross-site Scripting vulnerability
published 2011-04-11 15 y ago modified 2026-06-16 4 mo ago also GHSA-2p78-8hh6-96xc , PYSEC-2011-20 , EUVD-2011-0015
- cvss
- 6.1
- version 3.1, GitHub
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.5%
- EPSS 2.5% chance of exploitation in 30 days, percentile 84%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi feedparser 5.0.1
- feedparser Debian 14, Debian 13, Debian 12 5.0.1-1
debian advisories DEBIAN-CVE-2011-1157
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2011-1157 updated cvss 4.3
python-feedparser: multiple flaws corrected in version 5.0.1
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
2.46% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- code.google.com https://code.google.com/p/feedparser/issues/detail?id=254 referenced PoC, tagged "exploit" by a source, unverified
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=684877 referenced PoC, tagged "exploit" by a source, unverified
- bugzilla.novell.com https://bugzilla.novell.com/show_bug.cgi?id=680074 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | feedparser | >=5.0, <5.0.1 <5.0.1 |
5.0.1 |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
openwall.com
/lists/oss-security/2011/03/14/18
mailing-list, web, patch
-
code.google.com
/p/feedparser/issues/detail?id=254
web, exploit, patch
-
bugzilla.redhat.com
/show_bug.cgi?id=684877
web, exploit, patch, report
-
openwall.com
/lists/oss-security/2011/03/15/11
mailing-list, web, patch
-
bugzilla.novell.com
/show_bug.cgi?id=680074
web, exploit, patch, report
-
mandriva.com
/security/advisories?name=MDVSA-2011:082
vendor-advisory, advisory
-
secunia.com
/advisories/43730
third-party-advisory, vendor-advisory, advisory
-
secunia.com
/advisories/44074
third-party-advisory, vendor-advisory, advisory
-
support.novell.com
/security/cve/CVE-2011-1157.html
web
-
securityfocus.com
/bid/46867
vdb-entry, web
-
lists.opensuse.org
/opensuse-updates/2011-04/msg00026.html
mailing-list, web
-
nvd.nist.gov
/vuln/detail/CVE-2011-1157
advisory
-
github.com
/advisories/GHSA-2p78-8hh6-96xc
advisory
-
github.com
/kurtmckee/feedparser
package
-
github.com
/pypa/advisory-database/tree/main/vulns/feedparser/PYSEC-2011-20.yaml
web
-
web.archive.org
/web/20210121212051/https://www.securityfocus.com/bid/46867
web
-
web.archive.org
/web/20240723030532/https://tuxedo.org/mandriva/?name=MDVSA-2011:082
web
Sources
- CVE List CVE-2011-1157
- GitHub Advisory GHSA-2p78-8hh6-96xc
- NVD CVE-2011-1157
- OSV PYSEC-2011-20
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.