An issue in ClasroomIO before v.0.2.6 allows a remote attacker to escalate privileges via the endpoints /api/verify and /rest/v1/profile

published 2026-03-11 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-208562

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

classroomio classroomio 0.2.6

github.com/classroomio/classroomio/releases/tag/v0.2.6 release

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 7 mo ago (2026-03-11)

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

gist.github.com https://gist.github.com/prashunbaral/70c4f6f9d9ff8b82295623073eb41f3a referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

Weakness

CWE-345 Insufficient Verification of Data Authenticity
CWE-290 Authentication Bypass by Spoofing
CWE-639 Authorization Bypass Through User-Controlled Key

References

gist.github.com /prashunbaral/70c4f6f9d9ff8b82295623073eb41f3a
exploit, third-party-advisory
github.com /classroomio/classroomio/releases/tag/v0.2.6
release-notes

Sources

CVE List CVE-2025-67298
NVD CVE-2025-67298

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary