CVE-2026-102740

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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
Downstream
Published
2026-10-15T17:25:30Z
Modified
2026-10-28T11:03:33Z
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
Fixed
0422e11c954c4b026e986d1458f7a7a2eab7e591
Fixed
d945ce3357b093e74526871cd309832a717ecfda
Database specific
Show details 
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            "strategy": "StringRangeExpression"
        },
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            "range": [
                {
                    "introduced": "3.0.0"
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                {
                    "fixed": "3.0.12"
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}

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"
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vanir_signatures_modified 
"2026-10-28T11:03:33Z"