How severe is CVE-2025-53895?

CVE-2025-53895 has a CVSS 3.x base score of 8.8, 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 high, and availability high.

Is CVE-2025-53895 being actively exploited?

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

What products are affected by CVE-2025-53895?

CVE-2025-53895 primarily affects Zitadel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-53895?

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-2025-53895 have an EU (EUVD) identifier?

Yes. CVE-2025-53895 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21459.

When was CVE-2025-53895 published?

CVE-2025-53895 was published on 2025-07-15 and last updated on 2026-06-17.

CVE-2025-53895

CVE-2025-53895 is a high-severity vulnerability in Zitadel with a CVSS 3.x base score of 8.8. 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-384.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 7.7
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-21459
Weakness: CWE-384
Affected product: Zitadel
Published: 2025-07-15
Last modified: 2026-06-17

Description

ZITADEL is an open source identity management system. Starting in version 2.53.0 and prior to versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14, vulnerability in ZITADEL's session management API allows any authenticated user to update a session if they know its ID, due to a missing permission check. This flaw enables session hijacking, allowing an attacker to impersonate another user and access sensitive resources. Versions prior to `2.53.0` are not affected, as they required the session token for updates. Versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14 fix the issue.

Frequently asked questions

What is CVE-2025-53895?: ZITADEL is an open source identity management system. Starting in version 2.53.0 and prior to versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14, vulnerability in ZITADEL's session management API allows any authenticated user to update a session if they know its ID, due to a missing permission check. This flaw enables session hijacking, allowing an attacker to impersonate another user and access sensitive resources. Versions prior to `2.53.0` are not affected, as they required the session token for updates. Versions 4.0.0-rc.2, 3.3.2, 2.71.13, and 2.70.14 fix the issue.
How severe is CVE-2025-53895?: CVE-2025-53895 has a CVSS 3.x base score of 8.8, 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 high, and availability high.
Is CVE-2025-53895 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-53895?: CVE-2025-53895 primarily affects Zitadel. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-53895?: 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-2025-53895 have an EU (EUVD) identifier?: Yes. CVE-2025-53895 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21459.
When was CVE-2025-53895 published?: CVE-2025-53895 was published on 2025-07-15 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:*
cpe:2.3:a:zitadel:zitadel:4.0.0:rc1:*:*:*:*:*:*

More vulnerabilities in Zitadel

CVE-2025-64717 — Critical (CVSS 9.8): ZITADEL is an open source identity management platform. Starting in version 2.50.0 and prior to versions 2.71.19,…
CVE-2025-64103 — Critical (CVSS 9.8): Starting from 2.53.6, 2.54.3, and 2.55.0, Zitadel only required multi factor authentication in case the login policy…
CVE-2025-64102 — Critical (CVSS 9.8): Zitadel is open-source identity infrastructure software. Prior to 4.6.0, 3.4.3, and 2.71.18, an attacker can perform an…
CVE-2026-29191 — Critical (CVSS 9.3): ZITADEL is an open source identity management platform. From version 4.0.0 to 4.11.1, a vulnerability in Zitadel's…
CVE-2025-67494 — Critical (CVSS 9.3): ZITADEL is an open-source identity infrastructure tool. Versions 4.7.0 and below are vulnerable to an unauthenticated,…
CVE-2025-27507 — Critical (CVSS 9.0): The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration.…

All CVEs affecting Zitadel →

Other CWE-384 (Session Fixation) vulnerabilities

CVE-2024-11317 — Critical (CVSS 10.0): Session Fixation vulnerabilities allow an attacker to fix a users session identifier before login providing an…
CVE-2024-38513 — Critical (CVSS 10.0): Fiber is an Express-inspired web framework written in Go A vulnerability present in versions prior to 2.52.5 is a…
CVE-2021-20151 — Critical (CVSS 10.0): Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device. The router's…
CVE-2026-18527 — Critical (CVSS 9.9): IBM Administration Runtime Expert for i 1R1M0 IBM Application Runtime Expert (ARE) for i could allow a remote attacker…
CVE-2026-102489 — Critical (CVSS 9.8): Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the…
CVE-2026-92609 — Critical (CVSS 9.8): Session fixation in HTTP management authentication allows remote attackers to gain unauthorized access to an…

Browse all CWE-384 (Session Fixation) vulnerabilities →