How severe is CVE-2025-24013?

CVE-2025-24013 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-24013 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-24013?

CVE-2025-24013 affects Codeigniter. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-24013?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-24013 have an EU (EUVD) identifier?

Yes. CVE-2025-24013 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0207.

When was CVE-2025-24013 published?

CVE-2025-24013 was published on 2025-01-20 and last updated on 2026-06-17.

CVE-2025-24013

CVE-2025-24013 is a medium-severity vulnerability in Codeigniter with a CVSS 3.x base score of 5.3. 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-436.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-0207
Weakness: CWE-436
Affected product: Codeigniter
Published: 2025-01-20
Last modified: 2026-06-17

Description

CodeIgniter is a PHP full-stack web framework. Prior to 4.5.8, CodeIgniter lacked proper header validation for its name and value. The potential attacker can construct deliberately malformed headers with Header class. This could disrupt application functionality, potentially causing errors or generating invalid HTTP requests. In some cases, these malformed requests might lead to a DoS scenario if a remote service’s web application firewall interprets them as malicious and blocks further communication with the application. This vulnerability is fixed in 4.5.8.

Frequently asked questions

What is CVE-2025-24013?: CodeIgniter is a PHP full-stack web framework. Prior to 4.5.8, CodeIgniter lacked proper header validation for its name and value. The potential attacker can construct deliberately malformed headers with Header class. This could disrupt application functionality, potentially causing errors or generating invalid HTTP requests. In some cases, these malformed requests might lead to a DoS scenario if a remote service’s web application firewall interprets them as malicious and blocks further communication with the application. This vulnerability is fixed in 4.5.8.
How severe is CVE-2025-24013?: CVE-2025-24013 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-24013 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-24013?: CVE-2025-24013 affects Codeigniter. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-24013?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-24013 have an EU (EUVD) identifier?: Yes. CVE-2025-24013 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-0207.
When was CVE-2025-24013 published?: CVE-2025-24013 was published on 2025-01-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:codeigniter:codeigniter:*:*:*:*:*:*:*:*

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