CVE-2026-7768

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Source
https://cve.org/CVERecord?id=CVE-2026-7768
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7768.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-7768
Aliases
Published
2026-05-04T19:14:36.828Z
Modified
2026-07-15T01:49:02.867525477Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
@fastify/accepts-serializer vulnerable to Denial of Service via Unbounded Accept Header Cache Growth
Details

@fastify/accepts-serializer cached serializer-selection results keyed by the request Accept header without a size limit or eviction policy. A remote unauthenticated client could send many distinct but matching Accept header variants to make the cache grow unbounded, eventually exhausting the Node.js heap and crashing the process. Versions <= 6.0.3 are affected. Update to 6.0.4 or later, which bounds the cache via an LRU with a default size of 100 entries, configurable through the new cacheSize plugin option.

Database specific 
{
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/7xxx/CVE-2026-7768.json",
    "cna_assigner": "openjs"
}
References

Affected packages

Git / github.com/fastify/fastify-accepts-serializer

Affected ranges

Type
GIT
Repo
https://github.com/fastify/fastify-accepts-serializer
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3a45060282c8a1bc935cc5db2e1372a72b1d7428
Database specific 
{
    "cpe": "cpe:2.3:a:fastify:fastify\\/accepts-serializer:*:*:*:*:*:node.js:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.0.4"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ]
}

Affected versions

v0.*
v0.1.0
v0.2.0
v0.2.1
v1.*
v1.0.0
v1.0.1
v1.0.2
v2.*
v2.0.0
v2.0.1
v3.*
v3.0.0
v3.0.1
v3.1.0
v3.2.0
v4.*
v4.0.0
v4.0.1
v5.*
v5.0.0
v5.1.0
v5.2.0
v5.3.0
v6.*
v6.0.0
v6.0.1
v6.0.2
v6.0.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-7768.json"