6.9

CVE-2026-107280: asynchttpclient async-http-client

CVSS: 6.9v4.0MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-107280DEBIAN-CVE-2026-107280CGA-h82m-w668-8xvm
Published 07-10-2026Last modified 08-10-2026
Open JSON

Vulnerability summary

CVE-2026-107280 is a medium (CVSS 6.9) vulnerability in asynchttpclient async-http-client. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 16.6% of scored vulnerabilities.

Overall risk
28/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.9/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.26%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 07-10-2026
    PublishedVulnerability first disclosed.
  2. 08-10-2026
    Last modifiedVulnerability information updated.

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, ThreadSafeCookieStore validates Domain attributes with domain matching but does not reject public suffixes. A host beneath a suffix such as co.uk can set a cookie for that suffix, after which the shared cookie store sends it to unrelated hosts under the suffix. This can inject or overwrite session-relevant cookie values across origins. This issue is fixed in versions 3.0.13 and 2.16.1.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

17%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

08-10-202620-10-2026
EPSS score
0.26%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard3 products
  • druid< 38.0.0-r4
  • pinot< 1.5.1-r25
  • pinot-fips< 1.5.1-r21
Asynchttpclient1 product
Debian1 product
  • async-http-clientAll versions (No fix recorded)
Org.asynchttpclient1 product
  • async-http-client≥ 3.0.0, < 3.0.13 | ≥ 2.0.0, < 2.16.1
Ubuntu1 product
  • async-http-clientAll versions (No fix recorded)
Wolfi1 product
  • druid< 38.0.0-r4

6 vendors · 8 products

References

11 links
Show all 11 references