No exploitation reportedFix available

CVE-2026-85717

Q: Is CVE-2026-85717 actively exploited?

Active exploitation of CVE-2026-85717 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-85717?

CVE-2026-85717 has a CVSS v3 base score of 6.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

No exploitation reported by the sources we read.

Published2026-09-17
Fixed in3.0.12 · 2.16.1
WeaknessCWE-200 · CWE-522

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.14.5 to 2.16.0 and from 3.0.9 to 3.0.11, a client configured with a client-wide Realm and redirect following can disclose credentials after a cross-origin redirect because the Interceptors authentication path falls back to the client configuration after redirect handling clears the per-exchange realm. If the attacker-controlled target returns 401, the client can send Basic or Digest credentials or a Negotiate or NTLM token to that origin. Per-request realms are stripped correctly, and this issue is a residual bypass of the earlier cross-origin credential-stripping fixes. This issue is fixed in versions 2.16.1 and 3.0.12.

Timeline

dates in UTC

2026-09-1716:18CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-85717?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-85717?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

OSV

async-http-client

Branch	Affected	Fixed in	Source
3.0	≥ 3.0.9, < 3.0.12	3.0.12	OSV
2.x	≥ 2.14.5, < 2.16.1	2.16.1	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update async-http-client to 3.0.12 · 2.16.1

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-09-23
OpenCVESSVC decisionnone—
CNACVSS 3.16.8read 2026-10-23
CNAweakness (CWE)CWE-200, CWE-522read 2026-10-23
FIRST EPSSEPSS score0.5 %2026-10-23
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
Published: 2026-09-17
Last Modified: 2026-09-30
NVD status: Awaiting Analysis

Frequently asked questions

What is CVE-2026-85717?

Is CVE-2026-85717 actively exploited?

Active exploitation of CVE-2026-85717 has not been confirmed. Its EPSS score was 0.5% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-85717?

CVE-2026-85717 has a CVSS v3 base score of 6.8 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N.

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