How severe is CVE-2025-65670?

CVE-2025-65670 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2025-65670 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-65670?

CVE-2025-65670 affects Classroomio. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-65670?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-65670 have an EU (EUVD) identifier?

Yes. CVE-2025-65670 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199756.

When was CVE-2025-65670 published?

CVE-2025-65670 was published on 2025-11-26 and last updated on 2026-07-05.

CVE-2025-65670

CVE-2025-65670 is a medium-severity vulnerability in Classroomio with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-199756
Weakness: CWE-639
Affected product: Classroomio
Published: 2025-11-26
Last modified: 2026-07-05

Description

An Insecure Direct Object Reference (IDOR) in classroomio 0.1.13 allows students to access sensitive admin/teacher endpoints by manipulating course IDs in URLs, resulting in unauthorized disclosure of sensitive course, admin, and student data. The leak occurs momentarily before the system reverts to a normal state restricting access.

Frequently asked questions

What is CVE-2025-65670?: An Insecure Direct Object Reference (IDOR) in classroomio 0.1.13 allows students to access sensitive admin/teacher endpoints by manipulating course IDs in URLs, resulting in unauthorized disclosure of sensitive course, admin, and student data. The leak occurs momentarily before the system reverts to a normal state restricting access.
How severe is CVE-2025-65670?: CVE-2025-65670 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2025-65670 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-65670?: CVE-2025-65670 affects Classroomio. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-65670?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-65670 have an EU (EUVD) identifier?: Yes. CVE-2025-65670 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-199756.
When was CVE-2025-65670 published?: CVE-2025-65670 was published on 2025-11-26 and last updated on 2026-07-05.

References

EU advisories (EUVD)

http://classroomio.com

Affected products (1)

cpe:2.3:a:classroomio:classroomio:0.1.13:*:*:*:*:*:*:*

More vulnerabilities in Classroomio

CVE-2025-65669 — Critical (CVSS 9.1): An issue was discovered in classroomio 0.1.13. Student accounts are able to delete courses from the Explore page…
CVE-2025-67298 — High (CVSS 8.1): An issue in ClasroomIO before v.0.2.6 allows a remote attacker to escalate privileges via the endpoints /api/verify and…
CVE-2025-65672 — High (CVSS 7.5): Insecure Direct Object Reference (IDOR) in classroomio 0.1.13 allows unauthorized share and invite access to course…
CVE-2025-65676 — Medium (CVSS 5.4): Stored Cross site scripting (XSS) vulnerability in Classroomio LMS 0.1.13 allows authenticated attackers to execute…
CVE-2025-65675 — Medium (CVSS 5.4): Stored Cross site scripting (XSS) vulnerability in Classroomio LMS 0.1.13 allows authenticated attackers to execute…

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