CVE-2016-9964

Name: CVE-2016-9964
Creator: NVD / NIST
Published: 2016-12-16T09:59:00.373+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.76%

Last modified Jun 17, 2026

CVE-2016-9964 is a vulnerability of currently unknown severity. redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.. EPSS estimates a 1.76% chance of exploitation in the next 30 days.

Description

redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.

Metrics

EPSS Probability

1.76%

75.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-93

Affected Software

Vendor	Product	Versions
Bottlepy	Bottle	0.12.10
Debian	Debian Linux	8.0

References

http://www.debian.org/security/2016/dsa-3743Third Party Advisory
http://www.securityfocus.com/bid/94961Third Party Advisory, VDB Entry
https://github.com/bottlepy/bottle/commit/6d7e13da0f998820800ecb3fe9ccee4189aefb54Issue Tracking, Patch, Third Party Advisory
https://github.com/bottlepy/bottle/issues/913Issue Tracking, Patch, Third Party Advisory
http://www.debian.org/security/2016/dsa-3743Third Party Advisory
http://www.securityfocus.com/bid/94961Third Party Advisory, VDB Entry
https://github.com/bottlepy/bottle/commit/6d7e13da0f998820800ecb3fe9ccee4189aefb54Issue Tracking, Patch, Third Party Advisory
https://github.com/bottlepy/bottle/issues/913Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Dec 16, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9964?

redirect() in bottle.py in bottle 0.12.10 doesn't filter a "\r\n" sequence, which leads to a CRLF attack, as demonstrated by a redirect("233\r\nSet-Cookie: name=salt") call.

How severe is CVE-2016-9964?

Severity scoring for CVE-2016-9964 is pending analysis. The EPSS model estimates a 1.76% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9964?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-9964?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST