CVE-2026-8468

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Source
https://cve.org/CVERecord?id=CVE-2026-8468
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8468.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-8468
Aliases
Published
2026-05-14T10:29:51.062Z
Modified
2026-07-08T08:13:52.251275428Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Unbounded buffer accumulation in multipart header parsing causes denial of service in plug
Details

Allocation of Resources Without Limits or Throttling vulnerability in plug_project plug allows denial of service via unbounded buffer accumulation in multipart header parsing.

'Elixir.Plug.Conn':readpartheaders/2 in lib/plug/conn.ex does not obey its :length parameter. There is no upper bound on the size of the accumulated buffer. By contrast, the sibling function readpartbody has an explicit bytesize(acc) > length guard that stops accumulation once a limit is reached. No such guard exists in readpart_headers. An unauthenticated remote attacker can exhaust server memory by sending a crafted multipart/form-data request, causing a denial of service.

This issue affects plug from 1.4.0 before 1.15.4, 1.16.3, 1.17.1, 1.18.2, and 1.19.2.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "c52b2f32c90bccd718202bafccb5f95594e30183"
                },
                {
                    "fixed": "*"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8468.json",
    "cwe_ids": [
        "CWE-770"
    ],
    "cna_assigner": "EEF"
}
References

Affected packages

Git / github.com/elixir-plug/plug

Affected ranges

Type
GIT
Repo
https://github.com/elixir-plug/plug
Events
Introduced
f16a7526eb87c8953648dea2b7c57fe0c31e57f7
Fixed
2cb7958d33030aa826b0c7404375844d4593d43a
Fixed
33858427c7f2737d560a2e40a0c9a9270d77d1d7
Fixed
aa69c5ece99c40ded88b8c6581ecc86664b0b734
Fixed
d5dfffe25e975585227b1b85d247b0d14164bc45
Fixed
df812a1527bae9e941965e897308a2b8bbf83a94
Database specific 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "1.4.0"
        },
        {
            "fixed": "1.15.4"
        }
    ]
}

Affected versions

v1.*
v1.10.0
v1.10.1
v1.10.2
v1.10.3
v1.11.0
v1.11.1
v1.12.0
v1.12.1
v1.13.0
v1.13.1
v1.13.2
v1.13.3
v1.13.4
v1.13.5
v1.14.0
v1.14.1
v1.14.2
v1.15.0
v1.15.1
v1.15.2
v1.15.3
v1.16.0
v1.16.1
v1.16.2
v1.17.0
v1.18.0
v1.18.1
v1.19.1
v1.4.0
v1.4.1
v1.4.2
v1.4.3
v1.5.0
v1.5.0-rc.0
v1.5.0-rc.1
v1.5.0-rc.2
v1.5.1
v1.6.0
v1.6.1
v1.7.0
v1.7.1
v1.7.2
v1.8.0
v1.8.1
v1.8.2
v1.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8468.json"