How severe is CVE-2015-2171?

CVE-2015-2171 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2015-2171 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2171?

CVE-2015-2171 affects Slimframework Slim. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-2171?

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.

When was CVE-2015-2171 published?

CVE-2015-2171 was published on 2015-03-30 and last updated on 2026-06-17.

CVE-2015-2171

CVE-2015-2171 is a high-severity vulnerability in Slimframework Slim with a CVSS 2.0 base score of 7.5. 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-94.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-94
Affected product: Slimframework Slim
Published: 2015-03-30
Last modified: 2026-06-17

Description

Middleware/SessionCookie.php in Slim before 2.6.0 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via crafted session data.

Frequently asked questions

What is CVE-2015-2171?: Middleware/SessionCookie.php in Slim before 2.6.0 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via crafted session data.
How severe is CVE-2015-2171?: CVE-2015-2171 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2015-2171 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2171?: CVE-2015-2171 affects Slimframework Slim. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-2171?: 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.
When was CVE-2015-2171 published?: CVE-2015-2171 was published on 2015-03-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:slimframework:slim:*:*:*:*:*:*:*:*

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