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Fencer Intel
medium 4.3

CVE-2011-1340 json

Plone XSS Vulnerability

published 2011-08-05 15 y ago modified 2026-07-07 4 mo ago also GHSA-cvwc-g7fw-7xrj , PYSEC-2026-896 , EUVD-2022-3641

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

Cross-site scripting (XSS) vulnerability in skins/plone_templates/default_error_message.pt in Plone before 2.5.3 allows remote attackers to inject arbitrary web script or HTML via the type_name parameter to Members/ipa/createObject.

Patch / fix

  • pypi plone 2.5.3

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-2011-1340 updated cvss 4.3

plone: XSS vulnerability in default_error_message.pt

  • Red Hat Enterprise Linux 5 conga
    not 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

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • dev.plone.org http://dev.plone.org/plone/ticket/6110 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

Affected packages

ecosystem package affected fixed in
pypi plone
<2.5.3
2.5.3

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation

References

Sources

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.