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Fencer Vulns
medium 6.1

CVE-2016-10516 json

Pallets Werkzeug cross-site scripting vulnerability

published 2017-10-23 9 y ago modified 2026-06-17 4 mo ago also GHSA-h2fp-xgx6-xh6f , PYSEC-2017-43 , EUVD-2017-0141

cvss
6.1
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits
0
none known

Summary

Cross-site scripting (XSS) vulnerability in the render_full function in debug/tbtools.py in the debugger in Pallets Werkzeug before 0.11.11 (as used in Pallets Flask and other products) allows remote attackers to inject arbitrary web script or HTML via a field that contains an exception message.

Patch / fix

  • pypi werkzeug 0.11.11
  • palletsprojects werkzeug 0.11.11
  • python-werkzeug Debian 14, Debian 13, Debian 12 0.11.11+dfsg1-1

debian advisories DEBIAN-CVE-2016-10516

  • python-werkzeug Ubuntu 14.04 LTS 0.9.4+dfsg-1.1ubuntu2.1
  • python-werkzeug Ubuntu 16.04 LTS 0.10.4+dfsg1-1ubuntu1.1

ubuntu advisories UBUNTU-CVE-2016-10516

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • tfm satellite capsule 6.6, satellite 6.6 5.0-7.el7sat
  • kobo satellite capsule 6.6, satellite 6.6 0.5.1-1.el7sat
  • pulp satellite capsule 6.6, satellite 6.6 2.19.1.1-1.el7sat
  • gofer satellite capsule 6.6, satellite 6.6 2.12.5-5.el7sat
  • future satellite capsule 6.6, satellite 6.6 0.16.0-11.el7sat
  • ostree satellite capsule 6.6, satellite 6.6 2017.1-2.atomic.el7
  • foreman satellite capsule 6.6, satellite 6.6 1.22.0.32-1.el7sat
  • katello satellite capsule 6.6, satellite 6.6 3.12.0-2.el7sat

red hat advisories RHSA-2019:3172

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-2016-10516 updated cvss 7.1

python-werkzeug: Cross-site scripting in render_full function in debug/tbtools.py

  • Red Hat Ceph Storage 1.3 python-werkzeug Red Hat Ceph Storage 2 python-werkzeug Red Hat Enterprise Linux OpenStack Platform 6 (Juno) python-werkzeug Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer python-werkzeug Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) python-werkzeug Red Hat Software Collections python27-python-werkzeug
    affected: no fix planned “Will not fix”
  • Red Hat Satellite 6.6 tfm 5.0-7.el7sat, kobo 0.5.1-1.el7sat, gofer 2.12.5-5.el7sat, pulp 2.19.1.1-1.el7sat, tfm-ror52 1.0-4.el7sat, future 0.16.0-11.el7sat, +448 more Red Hat Satellite Capsule 6.6 tfm 5.0-7.el7sat, kobo 0.5.1-1.el7sat, gofer 2.12.5-5.el7sat, pulp 2.19.1.1-1.el7sat, tfm-ror52 1.0-4.el7sat, future 0.16.0-11.el7sat, +239 more
    fixed: vendor fix RHSA-2019:3172

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

1.98% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N
GitHub 3.0 6.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
pypi werkzeug
<0.11.11
0.11.11

Classification

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

References

Sources

Fencer Vulns 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.