CVE-2015-20110

Name: CVE-2015-20110
Creator: NVD / NIST
Published: 2023-10-31T03:15:07.613+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.59%

Last modified Jun 17, 2026

CVE-2015-20110 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. JHipster generator-jhipster before 2.23.0 allows a timing attack against validateToken due to a string comparison that stops at the first character that is different. Attackers can guess tokens by brute forcing one character at a time and observing the timing. EPSS estimates a 0.59% chance of exploitation in the next 30 days.

Description

JHipster generator-jhipster before 2.23.0 allows a timing attack against validateToken due to a string comparison that stops at the first character that is different. Attackers can guess tokens by brute forcing one character at a time and observing the timing. This of course drastically reduces the search space to a linear amount of guesses based on the token length times the possible characters.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.59%

43.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-307

Affected Software

Vendor	Product	Versions
Jhipster	Jhipster	< 2.23.0

References

https://github.com/jhipster/generator-jhipster/commit/79fe5626cb1bb80f9ac86cf46980748e65d2bdbcPatch
https://github.com/jhipster/generator-jhipster/commit/7c49ab3d45dc4921b831a2ca55fb1e2a2db1ee25Patch
https://github.com/jhipster/generator-jhipster/compare/v2.22.0...v2.23.0Patch, Release Notes
https://github.com/jhipster/generator-jhipster/issues/2095Issue Tracking, Patch, Vendor Advisory
https://github.com/jhipster/generator-jhipster/commit/79fe5626cb1bb80f9ac86cf46980748e65d2bdbcPatch
https://github.com/jhipster/generator-jhipster/commit/7c49ab3d45dc4921b831a2ca55fb1e2a2db1ee25Patch
https://github.com/jhipster/generator-jhipster/compare/v2.22.0...v2.23.0Patch, Release Notes
https://github.com/jhipster/generator-jhipster/issues/2095Issue Tracking, Patch, Vendor Advisory

Timeline

Published: Oct 31, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-20110?

How severe is CVE-2015-20110?

CVE-2015-20110 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.59% probability of exploitation in the next 30 days.

How do I fix CVE-2015-20110?

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-2015-20110?

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

Scan your code now

Source: NVD / NIST