How severe is CVE-2026-25101?

CVE-2026-25101 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-25101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-25101?

CVE-2026-25101 affects Bludit. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-25101?

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

Does CVE-2026-25101 have an EU (EUVD) identifier?

Yes. CVE-2026-25101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16581.

When was CVE-2026-25101 published?

CVE-2026-25101 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-25101

CVE-2026-25101 is a critical-severity vulnerability in Bludit with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v4: 4.8
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16581
Weakness: CWE-384
Affected product: Bludit
Published: 2026-03-27
Last modified: 2026-06-17

Description

Bludit allows user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behavior enables an attacker to fix a session ID for a victim and later hijack the authenticated session. This issue was fixed in version 3.17.2.

Frequently asked questions

What is CVE-2026-25101?: Bludit allows user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behavior enables an attacker to fix a session ID for a victim and later hijack the authenticated session. This issue was fixed in version 3.17.2.
How severe is CVE-2026-25101?: CVE-2026-25101 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-25101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-25101?: CVE-2026-25101 affects Bludit. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-25101?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-25101 have an EU (EUVD) identifier?: Yes. CVE-2026-25101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16581.
When was CVE-2026-25101 published?: CVE-2026-25101 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:bludit:bludit:*:*:*:*:*:*:*:*

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