How severe is CVE-2026-107282?

CVE-2026-107282 has a CVSS 4.0 base score of 9.4, rated critical severity.

Is CVE-2026-107282 being actively exploited?

It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.

How do I fix CVE-2026-107282?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-107282 published?

CVE-2026-107282 was published on 2026-10-07.

CVE-2026-107282

CVE-2026-107282 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.4. The underlying weakness is classified as CWE-319.

Key facts

Severity: Critical (CVSS 4.0 base score 9.4)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-319
Published: 2026-10-07
Last modified: 2026-10-07

Description

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13 and 2.16.1, cross-host request replay updates the current request but leaves the target request and related proxy context pointing at the original origin. Connection-pool selection, CONNECT handling, realm selection, and TLS setup can consequently send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination. Documented ResponseFilter failover and retry paths can trigger the replay. This issue is fixed in versions 3.0.13 and 2.16.1.

Frequently asked questions

What is CVE-2026-107282?: The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. Prior to 3.0.13 and 2.16.1, cross-host request replay updates the current request but leaves the target request and related proxy context pointing at the original origin. Connection-pool selection, CONNECT handling, realm selection, and TLS setup can consequently send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination. Documented ResponseFilter failover and retry paths can trigger the replay. This issue is fixed in versions 3.0.13 and 2.16.1.
How severe is CVE-2026-107282?: CVE-2026-107282 has a CVSS 4.0 base score of 9.4, rated critical severity.
Is CVE-2026-107282 being actively exploited?: It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
How do I fix CVE-2026-107282?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-107282 published?: CVE-2026-107282 was published on 2026-10-07.

References

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