CVE-2026-8468

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under NVD CVSS v3. EPSS exploit probability: 0.6%, top 55% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 8.2Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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':read_part_headers/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 read_part_body has an explicit byte_size(acc) > length guard that stops accumulation once a limit is reached. No such guard exists in read_part_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.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
45.6%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 14, 2026

Advisory Details (9)

Auto-updated May 14, 2026
Patch available. Sources: github.
generic

OSV - Open Source Vulnerabilities

https://osv.dev/vulnerability/EEF-CVE-2026-8468
github Patch Available

Unbounded buffer accumulation in multipart header parsing causes denial of service in Plug · Advisory · elixir-plug/plug · GitHub

https://github.com/elixir-plug/plug/security/advisories/GHSA-468c-vq7p-gh64
generic

Respect length when decoding multipart headers · elixir-plug/plug@df812a1 · GitHub

https://github.com/elixir-plug/plug/commit/df812a1527bae9e941965e897308a2b8bbf83a94
generic

Respect length when decoding multipart headers · elixir-plug/plug@d5dfffe · GitHub

https://github.com/elixir-plug/plug/commit/d5dfffe25e975585227b1b85d247b0d14164bc45
generic

Respect length when decoding multipart headers · elixir-plug/plug@aa69c5e · GitHub

https://github.com/elixir-plug/plug/commit/aa69c5ece99c40ded88b8c6581ecc86664b0b734
generic

Respect length when decoding multipart headers · elixir-plug/plug@3385842 · GitHub

https://github.com/elixir-plug/plug/commit/33858427c7f2737d560a2e40a0c9a9270d77d1d7
generic

Respect length when decoding multipart headers · elixir-plug/plug@2cb7958 · GitHub

https://github.com/elixir-plug/plug/commit/2cb7958d33030aa826b0c7404375844d4593d43a
generic

Unbounded buffer accumulation in multipart header parsing causes denial of service in plug | Erlang Ecosystem Foundation CNA

https://cna.erlef.org/cves/CVE-2026-8468.html
generic

Unbounded buffer accumulation in multipart header parsing causes denial of service in cowboy | Erlang Ecosystem Foundation CNA

https://cna.erlef.org/cves/CVE-2026-8466.html

Vendor Advisories for CVE-2026-8468(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Hex(1)
PackageVulnerable rangeFixed inDependents
plug1.19.0, 1.19.11.19.2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8468?
CVE-2026-8468 is a high vulnerability published on May 14, 2026. 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…
When was CVE-2026-8468 disclosed?
CVE-2026-8468 was first published in the National Vulnerability Database on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8468 actively exploited?
CVE-2026-8468 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 45.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-8468?
CVE-2026-8468 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-8468?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8468, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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