How severe is CVE-2015-3236?

CVE-2015-3236 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-3236 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3236?

CVE-2015-3236 primarily affects Haxx Curl. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3236?

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

When was CVE-2015-3236 published?

CVE-2015-3236 was published on 2015-06-22 and last updated on 2026-06-17.

CVE-2015-3236

CVE-2015-3236 is a medium-severity vulnerability in Haxx Curl with a CVSS 2.0 base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 7% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Haxx Curl
Published: 2015-06-22
Last modified: 2026-06-17

Description

cURL and libcurl 7.40.0 through 7.42.1 send the HTTP Basic authentication credentials for a previous connection when reusing a reset (curl_easy_reset) connection handle to send a request to the same host name, which allows remote attackers to obtain sensitive information via unspecified vectors.

Frequently asked questions

What is CVE-2015-3236?: cURL and libcurl 7.40.0 through 7.42.1 send the HTTP Basic authentication credentials for a previous connection when reusing a reset (curl_easy_reset) connection handle to send a request to the same host name, which allows remote attackers to obtain sensitive information via unspecified vectors.
How severe is CVE-2015-3236?: CVE-2015-3236 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-3236 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3236?: CVE-2015-3236 primarily affects Haxx Curl. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3236?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3236 published?: CVE-2015-3236 was published on 2015-06-22 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:a:haxx:curl:7.40.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.41.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.42.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:curl:7.42.1:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.40.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.41.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.42.0:*:*:*:*:*:*:*
cpe:2.3:a:haxx:libcurl:7.42.1:*:*:*:*:*:*:*

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