CVE-2026-5720Disclosure(miniupnp_project / miniupnpd)

LOWCVSS 9.1 · CRITICAL

Signal is active with 2 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.

miniupnp_project CVEs Back to dashboard

0.0/ 10 priority

Sources & remediation

Patch / fix

https://github.com/miniupnp/miniupnp/commit/f56bd09b2f2650126b832c5f30a65a09e28167fa

Vendor / third-party advisories

https://www.vulncheck.com/advisories/miniupnpd-integer-underflow-soapaction-header-parsing

Other references

https://github.com/miniupnp/miniupnp/

Weakness type (CWE)

CWE-125CWE-191

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.

miniupnpd

Threat summary

2 mentions across 1 observed day

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
2 total mentions across 1 day

Affected systems

Vendors

miniupnp_project

Products

miniupnpd

Deep dive

Activity timeline2 mentions / 1d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets2 URLs

By indicator

Full discourse2 posts

CVE@CVEnew176d
Disclosure
CVE-2026-5720 miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure b… https://www.cve.org/CVERecord?id=CVE-2026-5720
Post summary
The CVE-2026-5720 entry describes an integer underflow in miniupnpd’s SOAPAction header parsing that could lead to denial of service or information disclosure, with no exploit, PoC, or patch information provided.
00000119
57.2K followersView on X
Vulmon Vulnerability Feed@VulmonFeeds176d
Disclosure
CVE-2026-5720 Integer Underflow in miniupnpd SOAPAction Header Parsing Causes Denial of Service https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-5720
Post summary
The CVE‑2026‑5720 vulnerability is an integer underflow in miniupnpd’s SOAPAction header parsing, resulting in a denial‑of‑service condition.
0000039
4.0K followersView on X

CPE platform detail1 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

1 of 1 entries

Part	Vendor	Product	Version	Target SW	Target HW
App	miniupnp_project	miniupnpd	-	-	-

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