CVE-2026-102740

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2026-102740

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102740.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-102740

Aliases

GHSA-cf59-3jcr-vfhw

Published

2026-10-15T17:25:30Z

Modified

2026-10-16T10:45:54Z

Severity

5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L CVSS Calculator

Summary

AsyncHttpClient: Resumable download index store is created world-readable and follows a planted symlink

Details

The AsyncHttpClient library allows Java applications to execute HTTP requests and asynchronously process HTTP responses. From 2.0.0 until 2.16.1 and 3.0.12, PropertiesBasedResumableProcessor stores resumable download state at the predictable shared path $java.io.tmpdir/ahc/ResumableAsyncHandler.properties with default permissions and link-following file operations. A local user who can read the shared store can see download URLs, including embedded user information or query tokens. A local user who can write within or pre-create the affected shared store directory can plant a symbolic link that the client follows when saving state, truncating and overwriting a target file writable by the client process. The filesystem path is used when ResumableAsyncHandler decorates another AsyncHandler, while the no-argument constructors use a no-op processor and are unaffected. This issue is fixed in versions 2.16.1 and 3.0.12.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-379",
        "CWE-61",
        "CWE-732"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/102xxx/CVE-2026-102740.json"
}

References

Affected packages

Git / github.com/asynchttpclient/async-http-client

Affected ranges

Type

GIT

Repo

https://github.com/asynchttpclient/async-http-client

Events

Introduced

b60e5a0d7d989e4a24c13e03ba786c375b727448

Fixed

d1f0ccec417092098d40242fee7dfac84bb3c21f

Introduced

9a771c7b40e716ca77a3cad691545b29ff64bfd3

Fixed

c07038b44e5206375662b46859672e8f1df9f05a

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "2.0.0"
        },
        {
            "fixed":  "2.16.1"
        },
        {
            "introduced":  "3.0.0"
        },
        {
            "fixed":  "3.0.12"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

async-http-client-project-2.*

async-http-client-project-2.0.0

async-http-client-project-2.0.1

async-http-client-project-2.0.10

async-http-client-project-2.0.11

async-http-client-project-2.0.12

async-http-client-project-2.0.13

async-http-client-project-2.0.14

async-http-client-project-2.0.15

async-http-client-project-2.0.16

async-http-client-project-2.0.17

async-http-client-project-2.0.18

async-http-client-project-2.0.19

async-http-client-project-2.0.2

async-http-client-project-2.0.20

async-http-client-project-2.0.21

async-http-client-project-2.0.22

async-http-client-project-2.0.23

async-http-client-project-2.0.24

async-http-client-project-2.0.3

async-http-client-project-2.0.4

async-http-client-project-2.0.5

async-http-client-project-2.0.6

async-http-client-project-2.0.7

async-http-client-project-2.0.8

async-http-client-project-2.0.9

async-http-client-project-2.1.0

async-http-client-project-2.1.0-RC1

async-http-client-project-2.1.0-RC2

async-http-client-project-2.1.0-RC3

async-http-client-project-2.1.0-RC4

async-http-client-project-2.1.0-alpha10

async-http-client-project-2.1.0-alpha11

async-http-client-project-2.1.0-alpha12

async-http-client-project-2.1.0-alpha13

async-http-client-project-2.1.0-alpha14

async-http-client-project-2.1.0-alpha15

async-http-client-project-2.1.0-alpha16

async-http-client-project-2.1.0-alpha17

async-http-client-project-2.1.0-alpha18

async-http-client-project-2.1.0-alpha19

async-http-client-project-2.1.0-alpha2

async-http-client-project-2.1.0-alpha20

async-http-client-project-2.1.0-alpha21

async-http-client-project-2.1.0-alpha22

async-http-client-project-2.1.0-alpha23

async-http-client-project-2.1.0-alpha24

async-http-client-project-2.1.0-alpha25

async-http-client-project-2.1.0-alpha26

async-http-client-project-2.1.0-alpha3

async-http-client-project-2.1.0-alpha4

async-http-client-project-2.1.0-alpha5

async-http-client-project-2.1.0-alpha6

async-http-client-project-2.1.0-alpha7

async-http-client-project-2.1.0-alpha8

async-http-client-project-2.1.0-alpha9

async-http-client-project-2.1.1

async-http-client-project-2.1.2

async-http-client-project-2.10.0

async-http-client-project-2.10.1

async-http-client-project-2.10.2

async-http-client-project-2.10.3

async-http-client-project-2.10.4

async-http-client-project-2.10.5

async-http-client-project-2.11.0

async-http-client-project-2.12.0

async-http-client-project-2.12.1

async-http-client-project-2.12.2

async-http-client-project-2.12.3

async-http-client-project-2.12.4

async-http-client-project-2.14.5

async-http-client-project-2.15.0

async-http-client-project-2.16.0

async-http-client-project-2.2.0

async-http-client-project-2.2.1

async-http-client-project-2.3.0

async-http-client-project-2.4.0

async-http-client-project-2.4.1

async-http-client-project-2.4.2

async-http-client-project-2.4.3

async-http-client-project-2.4.4

async-http-client-project-2.4.5

async-http-client-project-2.4.6

async-http-client-project-2.4.7

async-http-client-project-2.4.8

async-http-client-project-2.4.9

async-http-client-project-2.5.0

async-http-client-project-2.5.1

async-http-client-project-2.5.2

async-http-client-project-2.5.3

async-http-client-project-2.5.4

async-http-client-project-2.6.0

async-http-client-project-2.7.0

async-http-client-project-2.8.0

async-http-client-project-2.8.1

async-http-client-project-2.9.0

async-http-client-project-3.*

async-http-client-project-3.0.0

async-http-client-project-3.0.1

async-http-client-project-3.0.10

async-http-client-project-3.0.11

async-http-client-project-3.0.2

async-http-client-project-3.0.3

async-http-client-project-3.0.4

async-http-client-project-3.0.5

async-http-client-project-3.0.6

async-http-client-project-3.0.7

async-http-client-project-3.0.8

async-http-client-project-3.0.9

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-102740.json"