Is CVE-2026-28678 actively exploited?

No active exploitation of CVE-2026-28678 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28678 be exploited remotely?

Yes. CVE-2026-28678 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28678?

CVE-2026-28678 has a CVSS score of 9.1 (CRITICAL).

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CRITICAL

CVE-2026-28678

CWE-311Published: March 7, 2026· Updated: Mar 11, 2026

9.1

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.2th

Official 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.

NVD Source

Technical Analysis

CVE-2026-28678 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.