How severe is CVE-2024-0853?

CVE-2024-0853 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-2024-0853 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-0853?

CVE-2024-0853 affects Haxx Curl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-0853?

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

Does CVE-2024-0853 have an EU (EUVD) identifier?

Yes. CVE-2024-0853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-16636.

When was CVE-2024-0853 published?

CVE-2024-0853 was published on 2024-02-03 and last updated on 2026-06-17.

CVE-2024-0853

CVE-2024-0853 is a medium-severity vulnerability in Haxx Curl 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-16636
Weakness: CWE-295
Affected product: Haxx Curl
Published: 2024-02-03
Last modified: 2026-06-17

Description

curl inadvertently kept the SSL session ID for connections in its cache even when the verify status (*OCSP stapling*) test failed. A subsequent transfer to the same hostname could then succeed if the session ID cache was still fresh, which then skipped the verify status check.

Frequently asked questions

What is CVE-2024-0853?: curl inadvertently kept the SSL session ID for connections in its cache even when the verify status (*OCSP stapling*) test failed. A subsequent transfer to the same hostname could then succeed if the session ID cache was still fresh, which then skipped the verify status check.
How severe is CVE-2024-0853?: CVE-2024-0853 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-2024-0853 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-0853?: CVE-2024-0853 affects Haxx Curl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-0853?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-0853 have an EU (EUVD) identifier?: Yes. CVE-2024-0853 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-16636.
When was CVE-2024-0853 published?: CVE-2024-0853 was published on 2024-02-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:haxx:curl:8.5.0:*:*:*:*:*:*:*

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