CVE-2016-10516: palletsprojects werkzeug
Vulnerability summary
CVE-2016-10516 is a medium (CVSS 6.1) vulnerability in palletsprojects werkzeug. EPSS estimates a 1.98% chance of exploitation in the next 30 days, higher than 80.6% of scored vulnerabilities.
Not severe (CVSS 6.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 23-10-2017PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · PypiEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS trend
Probability
1.98%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.98% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, user interaction (CVSS vector). Other conditions: not stated in public data.
Debian1 product
- python-werkzeug< 0.11.11+dfsg1-1 | < 0.8.3+dfsg-1+deb7u1
Palletsprojects1 product
- werkzeug< 0.11.11
PyPI1 product
- werkzeug< 0.11.11
Ubuntu1 product
- python-werkzeug< 0.9.4+dfsg-1.1ubuntu2.1 | < 0.10.4+dfsg1-1ubuntu1.1
4 vendors · 4 products
References
13 links- blog.neargle.com/2016/09/21/flask-src-review-get-a-xss-from-debuger/X Refsource MISCIssue TrackingARTICLEREPORT
- github.com/pallets/werkzeugPACKAGE