How severe is CVE-2026-23477?

CVE-2026-23477 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-23477 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23477?

CVE-2026-23477 affects Rocket.chat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23477?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-23477 have an EU (EUVD) identifier?

Yes. CVE-2026-23477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2667.

When was CVE-2026-23477 published?

CVE-2026-23477 was published on 2026-01-14 and last updated on 2026-06-17.

CVE-2026-23477

CVE-2026-23477 is a high-severity vulnerability in Rocket.chat with a CVSS 3.x base score of 7.7. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.7)
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-2667
Weakness: CWE-269
Affected product: Rocket.chat
Published: 2026-01-14
Last modified: 2026-06-17

Description

Rocket.Chat is an open-source, secure, fully customizable communications platform. In Rocket.Chat versions up to 6.12.0, the API endpoint GET /api/v1/oauth-apps.get is exposed to any authenticated user, regardless of their role or permissions. This endpoint returns an OAuth application, as long as the user knows its ID, including potentially sensitive fields such as client_id and client_secret. This vulnerability is fixed in 6.12.0.

Frequently asked questions

What is CVE-2026-23477?: Rocket.Chat is an open-source, secure, fully customizable communications platform. In Rocket.Chat versions up to 6.12.0, the API endpoint GET /api/v1/oauth-apps.get is exposed to any authenticated user, regardless of their role or permissions. This endpoint returns an OAuth application, as long as the user knows its ID, including potentially sensitive fields such as client_id and client_secret. This vulnerability is fixed in 6.12.0.
How severe is CVE-2026-23477?: CVE-2026-23477 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-23477 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23477?: CVE-2026-23477 affects Rocket.chat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23477?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-23477 have an EU (EUVD) identifier?: Yes. CVE-2026-23477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-2667.
When was CVE-2026-23477 published?: CVE-2026-23477 was published on 2026-01-14 and last updated on 2026-06-17.

References

https://github.com/RocketChat/Rocket.Chat/security/advisories/GHSA-g4wm-fg3c-g4p2

Affected products (1)

cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*

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