Cross-site scripting (XSS) vulnerability in the render_full function in debug/tbtools.py…
Priority LOW 31CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 2 fixed, 6 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-79.
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.
Why it matters now
EPSS 0.01985 80th percentileScored 2026-11-07
Fix Partial Werkzeug (PyPI): 0.11.11Red Hat: 1 advisoryRed Hat: 2 fixed, 6 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | Werkzeug (PyPI) | before 0.11.11 | 0.11.11 | Patch available | GHSA-h2fp-xgx6-xh6f |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- Werkzeug (PyPI) Vendor— Affected before 0.11.11 Fixed in 0.11.11 Patch available GHSA-h2fp-xgx6-xh6f
Remediation
- Fix · GHSA-h2fp-xgx6-xh6f Werkzeug (PyPI) Fixed in 0.11.11 Advisory →
Red Hat 1 advisory
- RHSA-2019:3172 Released 2019-10-22 · Red Hat rating ModerateRed Hat Satellite 6 security, bug fix, and enhancement update
- Red Hat Satellite 6.6 ansible-runner-1.3.4-2.el7ar, ansiblerole-foreman_scap_client-0.0.3-1.el7sat, ansiblerole-insights-client-1.6-2.el7sat +47
- Red Hat Satellite Capsule 6.6 ansible-runner-1.3.4-2.el7ar, ansiblerole-foreman_scap_client-0.0.3-1.el7sat, ansiblerole-insights-client-1.6-2.el7sat +47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Ceph Storage 1.3 | Affected | No fix planned: Will not fix |
| Red Hat Ceph Storage 2 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) | Affected | No fix planned: Will not fix |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Satellite 6.6 | Fixed | RHSA-2019:3172 |
| Red Hat Satellite Capsule 6.6 | Fixed | RHSA-2019:3172 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-10516
- 2026-10-03 Alias added: GHSA-h2fp-xgx6-xh6f
References
Advisory 3
Other 6
- http://blog.neargle.com/2016/09/21/flask-src-review-get-a-xss-from-debuger/
- [debian-lts-announce] 20171124 [SECURITY] [DLA 1191-1] python-werkzeug security update
- https://github.com/pallets/werkzeug/commit/1034edc7f901dd645ec6e462754111b39002bd65
- https://github.com/pallets/werkzeug
- https://github.com/pypa/advisory-database/tree/main/vulns/werkzeug/PYSEC-2017-43.yaml
- http://blog.neargle.com/2016/09/21/flask-src-review-get-a-xss-from-debuger
More pallets Werkzeug vulnerabilities
- TI-2019-10671 In Pallets Werkzeug before 0.15.5, SharedDataMiddleware mishandles drive names (such as C:) in Windows pathnames. CVSS 3.1HIGH 7.5
- TI-2022-11856 Improper parsing of HTTP requests in Pallets Werkzeug v2.1.0 and below allows attackers… CVSS 3.1CRITICAL 9.8
- TI-2023-10880 Werkzeug may allow high resource usage when parsing multipart form data with many fields CVSS 3.1HIGH 7.5
- TI-2024-22527 Werkzeug's improper usage of a pathname and improper CSRF protection results in the remote command execution CVSS 3.1HIGH 7.5
- TI-2024-33234 Werkzeug possible resource exhaustion when parsing file data in forms CVSS 4.0MEDIUM 6.9
- TI-2023-24778 Uncontrolled resource consumption in pallets werkzeug CVSS 3.1HIGH 8.0
Sources
- CVE-2016-10516 · CVE Program
- CVE-2016-10516 · NVD
- FIRST EPSS
- GHSA-h2fp-xgx6-xh6f · GitHub Advisory Database · CC BY 4.0
- CVE-2016-10516 · Red Hat security data · CC BY 4.0
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