CVE-2021-229243.7LowCWE-20

CVE-2021-22924: Haxx https://github.com/curl/curl vulnerability

Haxx · https://github.com/curl/curl

Vendor fix available · Affected: Haxx https://github.com/curl/curl · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

6.3%probability of exploitation in the next 30 days

93rd percentile

050100

Higher than 93% of scored CVEs

3.7LowCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

libcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errors in the logic, the config matching function did not take 'issuercert' into account and it compared the involved paths *case insensitively*,which could lead to libcurl reusing wrong connections.File paths are, or can be, case sensitive on many systems but not all, and caneven vary depending on used file systems.The comparison also didn't include the 'issuer cert' which a transfer can setto qualify how to verify the server certificate.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

https://github.com/curl/curlcurl 7.10.4 to and include curl 7.77.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Input Validation · Input Validation and Logic
Vendor: Haxx
Published: August 2021
Band: Possible (1 to 10%), August 2021
Bounty reports: 2 disclosed on HackerOne

Disclosed bug bounty reports about CVE-2021-22924

The reports on HackerOne that name this CVE, with HackerOne's own outcome. Titles and metadata only.

TLS session cache case-folds CA paths and bypasses the active trust profilecurl · 2026 · medium severityInformative
CVE-2021-22924: Bad connection reuse due to flawed path name checkscurl · 2021 · high severityValid

CoverageNo articles yet

No CyberSIXT article names CVE-2021-22924 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.

References

7 more references are in the CVE record.