CVE-2023-49549

Name: CVE-2023-49549
Creator: NVD / NIST
Published: 2024-01-02T23:15:12.107+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.76%

Last modified Jun 17, 2026

CVE-2023-49549 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_getretvalpos function in the msj.c file.. EPSS estimates a 0.76% chance of exploitation in the next 30 days.

Description

An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_getretvalpos function in the msj.c file.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.76%

50.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Cesanta	Mjs	2.20.0

References

https://github.com/cesanta/mjs/issues/251Exploit, Issue Tracking, Vendor Advisory
https://github.com/cesanta/mjs/issues/251Exploit, Issue Tracking, Vendor Advisory

Timeline

Published: Jan 2, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-49549?

An issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_getretvalpos function in the msj.c file.

How severe is CVE-2023-49549?

CVE-2023-49549 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.76% probability of exploitation in the next 30 days.

How do I fix CVE-2023-49549?

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-2023-49549?

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

Scan your code now

Source: NVD / NIST