CVE-2026-32145Network attack vector

Service interruption via multipart quota bypass

Published Apr 2, 2026 · Updated Apr 2, 2026

Resource exhaustion in gleam-wisp Wisp 0.2.0 through 2.2.1 allows remote attackers to interrupt applications via multipart requests. The multipart_body and multipart_headers MoreRequired branches append boundary-free chunks while recursing without decrementing the configured body or file quota. Applications that pass user-controlled input to require_form or require_multipart_form can exhaust memory or temporary disk and be terminated.

CVSS severity8.7
High
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in gleam-wisp Wisp 0.2.0 through 2.2.1 allows remote attackers to interrupt applications via multipart requests. The multipart_body and multipart_headers MoreRequired branches append boundary-free chunks while recursing without decrementing the configured body or file quota. Applications that pass user-controlled input to require_form or require_multipart_form can exhaust memory or temporary disk and be terminated.

The record

CVE
CVE-2026-32145
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
gleam-wisp
Product
Wisp
Classifications
CWE-770, CAPEC-130, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.2.0 <2.2.2
  2. Affected versionversion=d8e722e22ccb42bda9d0b6248658d37ab4e9b376 <7a978748e12ab29db232c222254465890e1a4a90
  3. Affected versionversion=pkg:github/gleam-wisp/wisp@d8e722e22ccb42bda9d0b6248658d37ab4e9b376 <pkg:github/gleam-wisp/wisp@7a978748e12ab29db232c222254465890e1a4a90
  4. Affected versionversion=pkg:hex/[email protected] <pkg:hex/[email protected]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

gleam-wisp · Wispversion=0.2.0 <2.2.2; version=d8e722e22ccb42bda9d0b6248658d37ab4e9b376 <7a978748e12ab29db232c222254465890e1a4a90; version=pkg:github/gleam-wisp/wisp@d8e722e22ccb42bda9d0b6248658d37ab4e9b376 <pkg:github/gleam-wisp/wisp@7a978748e12ab29db232c222254465890e1a4a90; version=pkg:hex/[email protected] <pkg:hex/[email protected]

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7Erlang Ecosystem FoundationCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-130Excessive Allocation
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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