CVE-2026-8162Disclosure(pillarjs / multiparty)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch pillarjs multiparty systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

[email protected] and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to [email protected] or higher.

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-755

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • multiparty

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
Products
multiparty

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-05-12: 2Patch / Workaround · 2026-05-12: 1Technical Details · 2026-05-12: 205-12
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
Full discourse2 posts
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-8162 Denial of Service via Uncaught Exception in Multiparty 4.2.3 and Lower https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-8162

    Post summary

    CVE-2026-8162 describes a denial‑of‑service flaw caused by an uncaught exception in Multiparty 4.2.3 and earlier, with technical details presented but no poC, exploit, or mitigation outlined.

    0000044
    4.0K followersView on X
  • Ulises Gascón@kom_256
    Patch

    🚨 High-severity security fix in multiparty@4.3.0 just released! Patches CVE-2026-8162 — multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv

    Post summary

    A high‑severity patch for multiparty 4.3.0 addressing CVE‑2026‑8162, a denial‑of‑service flaw caused by an uncaught exception during filename parsing, has just been released.

    0000091
    5.5K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Apppillarjsmultiparty-node.js-

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