CVE-2026-28678

Name: CVE-2026-28678
Creator: NVD / NIST
Published: 2026-03-07T16:15:54.01+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.17%

Last modified Jun 17, 2026

CVE-2026-28678 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. DSA Study Hub is an interactive educational web application. Prior to commit d527fba, the user authentication system in server/routes/auth.js was found to be vulnerable to Insufficiently Protected Credentials. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

DSA Study Hub is an interactive educational web application. Prior to commit d527fba, the user authentication system in server/routes/auth.js was found to be vulnerable to Insufficiently Protected Credentials. Authentication tokens (JWTs) were stored in HTTP cookies without cryptographic protection of the payload. This issue has been patched via commit d527fba.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.17%

6.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Toxicbishop	Dsa Study Hub	< 2026-02-21

References

Timeline

Published: Mar 7, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-28678?

How severe is CVE-2026-28678?

CVE-2026-28678 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2026-28678?

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-2026-28678?

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

Scan your code now

Source: NVD / NIST