How severe is CVE-2026-23796?

CVE-2026-23796 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-2026-23796 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23796?

CVE-2026-23796 affects Opensolution Quick.cart. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23796?

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-2026-23796 have an EU (EUVD) identifier?

Yes. CVE-2026-23796 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5552.

When was CVE-2026-23796 published?

CVE-2026-23796 was published on 2026-02-05 and last updated on 2026-06-17.

CVE-2026-23796

CVE-2026-23796 is a critical-severity vulnerability in Opensolution Quick.cart 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% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-5552
Weakness: CWE-384
Affected product: Opensolution Quick.cart
Published: 2026-02-05
Last modified: 2026-06-17

Description

Quick.Cart 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 version 6.7 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Frequently asked questions

What is CVE-2026-23796?: Quick.Cart 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 version 6.7 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
How severe is CVE-2026-23796?: CVE-2026-23796 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-2026-23796 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23796?: CVE-2026-23796 affects Opensolution Quick.cart. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23796?: 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-2026-23796 have an EU (EUVD) identifier?: Yes. CVE-2026-23796 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-5552.
When was CVE-2026-23796 published?: CVE-2026-23796 was published on 2026-02-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:opensolution:quick.cart:6.7:*:*:*:*:*:*:*

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