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CVE-2026-107230

HIGH 7.4

Published 2026-10-07 · Last modified 2026-10-08

The AsyncHttpClient (AHC) library allows Java applications to easily execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 3.0.14, connection-pool partitioning still omits identity-defining fields for Kerberos, SPNEGO, NTLM, and authenticated proxy connections. Logins without a configured principal, proxy realms, identities sharing a user name, and SOCKS or CONNECT proxy logins can reuse a socket authenticated as a different identity. A later request is then executed under the first identity and can expose that identity's data or authority to another caller. In the affected execution path, SpnegoEngine, NTLM, Kerberos, SPNEGO, SOCKS, and CONNECT control or expose the vulnerable behavior. This issue is fixed in version 3.0.14.

ELEVATED IMPACT

Severe if exploited (CVSS 7.4), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 8th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.4CVSS 3.1 · HIGH

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors Asynchttpclient

Products Async Http Client

Weakness (CWE)

  • CWE-346: : Origin Validation Error
  • CWE-863: : Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • org.asynchttpclient:async-http-client Maven

    pkg:maven/org.asynchttpclient/async-http-client

    ECOSYSTEM range
    • Introduced version (included): 3.0.0
    • Fixed boundary (excluded): 3.0.14
    14 explicitly listed affected versions

    3.0.0, 3.0.1, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9

    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-v2j5-22fr-j62r/GHSA-v2j5-22fr-j62r.json"
  }
}
    GitHub Advisory Database · GHSA-v2j5-22fr-j62r · Updated 2026-10-08T17:01:03.329024369Z
  • org.asynchttpclient:async-http-client Maven

    pkg:maven/org.asynchttpclient/async-http-client

    ECOSYSTEM range
    • Introduced version (included): 2.0.0
    • Last affected version (included): 2.16.1
    113 explicitly listed affected versions

    2.0.0, 2.0.1, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.15, 2.0.16, 2.0.17, 2.0.18, 2.0.19, 2.0.2, 2.0.20, 2.0.21, 2.0.22, 2.0.23, 2.0.24, 2.0.25, 2.0.26, 2.0.27, 2.0.28, 2.0.29, 2.0.3, 2.0.30, 2.0.31, 2.0.32, 2.0.33, 2.0.34, 2.0.35, 2.0.36, 2.0.37, 2.0.38, 2.0.39, 2.0.4, 2.0.40, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.1.0, 2.1.0-RC1, 2.1.0-RC2, 2.1.0-RC3, 2.1.0-RC4, 2.1.0-alpha1, 2.1.0-alpha10, 2.1.0-alpha11, 2.1.0-alpha12, 2.1.0-alpha13, 2.1.0-alpha14, 2.1.0-alpha15, 2.1.0-alpha16, 2.1.0-alpha17, 2.1.0-alpha18, 2.1.0-alpha19, 2.1.0-alpha2, 2.1.0-alpha20, 2.1.0-alpha21, 2.1.0-alpha22, 2.1.0-alpha23, 2.1.0-alpha24, 2.1.0-alpha25, 2.1.0-alpha26, 2.1.0-alpha3, 2.1.0-alpha4, 2.1.0-alpha5, 2.1.0-alpha6, 2.1.0-alpha7, 2.1.0-alpha8, 2.1.0-alpha9, 2.1.1, 2.1.2, 2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.11.0, 2.12.0, 2.12.1, 2.12.2, 2.12.3, 2.12.4, 2.14.5, 2.15.0, 2.16.0, 2.16.1, 2.2.0, 2.2.1, 2.3.0, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.5, 2.4.6, 2.4.7, 2.4.8, 2.4.9, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.5.4, 2.6.0, 2.7.0, 2.8.0, 2.8.1, 2.9.0

    Additional upstream package constraints
    {
  "database": {
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-v2j5-22fr-j62r/GHSA-v2j5-22fr-j62r.json"
  }
}
    GitHub Advisory Database · GHSA-v2j5-22fr-j62r · Updated 2026-10-08T17:01:03.329024369Z

Vendor product assessments

  • async-http-client as a component of Red Hat Fuse 7 · known not affected

    Vendor assessment for this product only.

    Reason: vulnerable code not in execute path

    pkg:maven/org.asynchttpclient/[email protected]

    Red Hat · CVE-2026-107230 · Updated 2026-10-13T09:11:08+00:00

All CVSS metrics

  • HIGH 7.4 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  • HIGH 7.4 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS