CVE-2013-1895

Name: CVE-2013-1895
Creator: NVD / NIST
Published: 2020-01-28T15:15:14.343+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.83%

Last modified Jun 16, 2026

CVE-2013-1895 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. The py-bcrypt module before 0.3 for Python does not properly handle concurrent memory access, which allows attackers to bypass authentication via multiple authentication requests, which trigger the password hash to be overwritten.. EPSS estimates a 2.83% chance of exploitation in the next 30 days.

Description

The py-bcrypt module before 0.3 for Python does not properly handle concurrent memory access, which allows attackers to bypass authentication via multiple authentication requests, which trigger the password hash to be overwritten.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

2.83%

84.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-307

Affected Software

Vendor	Product	Versions
Python	Py-Bcrypt	< 0.3
Fedoraproject	Fedora	17
Fedoraproject	Fedora	18

References

http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101382.htmlThird Party Advisory, Tool Signature
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101387.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2013/03/26/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/58702Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/83039Third Party Advisory, VDB Entry
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101382.htmlThird Party Advisory, Tool Signature
http://lists.fedoraproject.org/pipermail/package-announce/2013-April/101387.htmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2013/03/26/2Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/58702Third Party Advisory, VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/83039Third Party Advisory, VDB Entry

Timeline

Published: Jan 28, 2020
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-1895?

How severe is CVE-2013-1895?

CVE-2013-1895 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.83% probability of exploitation in the next 30 days.

How do I fix CVE-2013-1895?

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-2013-1895?

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

Scan your code now

Source: NVD / NIST