CVE-2026-24352
CVE-2026-24352 is a critical-severity vulnerability in Pluxml 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% (27th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-9024
- Weakness: CWE-384
- Affected product: Pluxml
- Published:
- Last modified:
Description
PluXml CMS allows a user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only versions 5.8.21 and 5.9.0-rc7 were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
Frequently asked questions
- What is CVE-2026-24352?
- PluXml CMS allows a user's session identifier to be set before authentication. The value of this session ID stays the same after authentication. This behaviour enables an attacker to fix a session ID for a victim and later hijack the authenticated session. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only versions 5.8.21 and 5.9.0-rc7 were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
- How severe is CVE-2026-24352?
- CVE-2026-24352 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-2026-24352 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-24352?
- CVE-2026-24352 primarily affects Pluxml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-24352?
- 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-2026-24352 have an EU (EUVD) identifier?
- Yes. CVE-2026-24352 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9024.
- When was CVE-2026-24352 published?
- CVE-2026-24352 was published on 2026-02-27 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:pluxml:pluxml:5.8.21:*:*:*:*:*:*:*
- cpe:2.3:a:pluxml:pluxml:5.9.0:rc7:*:*:*:*:*:*
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