CVE-2026-105752

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Source
https://cve.org/CVERecord?id=CVE-2026-105752
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105752.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-105752
Aliases
Downstream
CGA (8)
MINI (3)
Published
2026-10-05T22:32:59Z
Modified
2026-10-07T02:47:27Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
vLLM: Harmony tool continuations drop `cache_salt` — restoring a cross-tenant prefix-cache membership oracle
Details

vLLM is an inference and serving engine for large language models. Prior to 0.30.0, Harmony tool continuations submitted through "POST /v1/responses" requests rebuild the next-turn engine input without preserving the cache_salt value, placing the continuation prefix in the global unsalted cache namespace even when the caller enabled salting. On deployments with prefix caching enabled, which is the default, an authenticated tenant who can reconstruct a victim's low-entropy post-tool history can submit the same continuation and use the cached_tokens_per_turn count to determine whether the prefix was previously processed, defeating the intended tenant isolation of salted prefix caching. This issue is fixed in version 0.30.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-524"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105752.json"
}
References

Affected packages

Git / github.com/vllm-project/vllm

Affected ranges

Type
GIT
Repo
https://github.com/vllm-project/vllm
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6a2a2bb02b563b83f946012959fd3927984d072a
Fixed
9ed533eb4adfe48aef7e569a08daeccd2a773fed
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.30.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

proto-v0.*
proto-v0.1.0
Other
submission
v0.*
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.10.0
v0.10.0rc1
v0.10.0rc2
v0.10.1rc1
v0.10.2rc1
v0.10.2rc2
v0.11.0rc1
v0.11.1
v0.11.1rc0
v0.11.1rc1
v0.11.1rc2
v0.11.1rc3
v0.11.1rc4
v0.11.1rc5
v0.11.1rc6
v0.13.0rc1
v0.14.0rc0
v0.14.0rc1
v0.15.0rc1
v0.15.2rc0
v0.16.0rc0
v0.16.0rc1
v0.17.0rc0
v0.17.1rc0
v0.17.2rc0
v0.18.0rc0
v0.18.1rc0
v0.18.2rc0
v0.19.1rc0
v0.19.2rc0
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.2.7
v0.20.1rc0
v0.20.2rc0
v0.21.1rc0
v0.22.1rc0
v0.23.1rc0
v0.25.0
v0.26.1rc0
v0.27.2rc0
v0.28.1rc0
v0.29.1rc0
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.30.0rc1
v0.30.0rc2
v0.4.0
v0.4.0.post1
v0.4.1
v0.4.2
v0.4.3
v0.5.0
v0.5.0.post1
v0.5.1
v0.5.2
v0.5.3
v0.5.3.post1
v0.5.4
v0.5.5
v0.6.0
v0.6.1
v0.6.1.post1
v0.6.1.post2
v0.6.2
v0.6.3
v0.6.3.post1
v0.6.4
v0.6.4.post1
v0.6.5
v0.6.6
v0.6.6.post1
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.8.0rc1
v0.8.0rc2
v0.8.1
v0.8.2
v0.8.3rc1
v0.8.4
v0.9.0
v0.9.1
v0.9.1rc1
v0.9.1rc2
v0.9.2rc1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-105752.json"