CVE-2025-30346

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Source
https://cve.org/CVERecord?id=CVE-2025-30346
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-30346.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-30346
Aliases
Downstream
ALPINE (1)
DEBIAN (1)
OESA (1)
openSUSE (2)
UBUNTU (1)
Related
openSUSE (2)
Published
2025-03-21T00:00:00Z
Modified
2026-08-18T17:52:22Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
[none]
Details

Varnish Cache before 7.6.2 and Varnish Enterprise before 6.0.13r10 allow client-side desync via HTTP/1 requests.

Database specific 
{
    "cna_assigner":  "mitre",
    "cwe_ids":  [
        "CWE-444"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/30xxx/CVE-2025-30346.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "7.5.0"
                },
                {
                    "fixed":  "7.6.2"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "7.5.0"
                },
                {
                    "fixed":  "7.6.2"
                }
            ],
            "source":  "CPE_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "fixed":  "7.6.2"
                },
                {
                    "fixed":  "6.0.13r10"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/varnishcache/varnish-cache

Affected ranges

Type
GIT
Repo
https://github.com/varnishcache/varnish-cache
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
49168df457f8965fe5b3d257e95afaa2f41498c9
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "7.6.2"
        }
    ],
    "source":  "CPE_RANGE"
}

Affected versions

varnish-4.*
varnish-4.0.0
varnish-4.0.0-beta1
varnish-4.0.0-tp1
varnish-4.0.0-tp2
varnish-4.0.1
varnish-5.*
varnish-5.0.0
varnish-5.1.0
varnish-5.1.1
varnish-5.1.2
varnish-6.*
varnish-6.0.0
varnish-6.1.0
varnish-6.4.0
varnish-6.5.0
varnish-6.5.1
varnish-7.*
varnish-7.6.0
varnish-7.6.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-30346.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "23622748511810100298892430565560418682",
                "218839734523592776867766468661275010437",
                "164416863857509784494032526117345070744",
                "223724184333599709384384874797774510966",
                "197875613171327800308645167251626441464",
                "263293726540262616557466597721550093620",
                "271820512147372279692875200570924420053"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-30346-367d39a1",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/varnishcache/varnish-cache/commit/49168df457f8965fe5b3d257e95afaa2f41498c9",
        "target":  {
            "file":  "bin/varnishtest/vtc_http.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "320899585599011995335457946287409436056",
            "length":  956
        },
        "id":  "CVE-2025-30346-99ef4ac7",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/varnishcache/varnish-cache/commit/49168df457f8965fe5b3d257e95afaa2f41498c9",
        "target":  {
            "file":  "bin/varnishtest/vtc_http2.c",
            "function":  "b64_settings"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "120248460162769918690912024032874919119",
                "77104697107606013345318422003924957022",
                "229700380975947820374920787836229443977",
                "321786889213902170635439565983227828350",
                "157674414179384749288192790946453512404",
                "118266283243202144759254515689957791012",
                "70255627731328964792477425442447516007"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2025-30346-ac6a0e80",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/varnishcache/varnish-cache/commit/49168df457f8965fe5b3d257e95afaa2f41498c9",
        "target":  {
            "file":  "bin/varnishtest/vtc_http2.c"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "329224240331914269285633393671409497276",
            "length":  968
        },
        "id":  "CVE-2025-30346-b442b847",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/varnishcache/varnish-cache/commit/49168df457f8965fe5b3d257e95afaa2f41498c9",
        "target":  {
            "file":  "bin/varnishtest/vtc_http.c",
            "function":  "cmd_http_upgrade"
        }
    }
]
vanir_signatures_modified 
"2026-08-18T17:52:22Z"