CVE-2026-28678

Rejected JWT cookie encryption finding

Published Mar 7, 2026 · Updated Mar 7, 2026

CVE-2026-28678 was rejected after further research determined that DSA Study Hub's JWT cookie handling was not a vulnerability. The withdrawn report had characterized the JWT payloads placed in HTTP-only cookies by server/routes/auth.js as insufficiently protected, but the current authoritative record removes that finding. No affected versions, attacker path, or security impact should be attributed to this rejected record.

CVSS severityUnavailable
Unscored
EPSS probabilityUnavailable
No score available in this record
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

CVE-2026-28678 was rejected after further research determined that DSA Study Hub's JWT cookie handling was not a vulnerability. The withdrawn report had characterized the JWT payloads placed in HTTP-only cookies by server/routes/auth.js as insufficiently protected, but the current authoritative record removes that finding. No affected versions, attacker path, or security impact should be attributed to this rejected record.

The record

CVE
CVE-2026-28678
Published
Mar 7, 2026
Updated
Mar 7, 2026
Vendor
toxicbishop
Product
DSA Study Hub
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< d527fba

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

toxicbishop · DSA Study Hubversion=< d527fba

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo