HOMEVULNERABILITIESCVE-2025-71319
HIGH

CVE-2025-71319

CWE-835Published: June 9, 2026· Updated: Jun 15, 2026

7.5
CVSS v3.1
EPSS:0.10%probability of exploitation in 30 daysPercentile:26.9th

Official Description

image-size through 2.0.2 contains a denial of service vulnerability that allows remote attackers to permanently block the Node.js event loop by supplying a specially crafted image buffer with a zero-valued size field in a recognized box-type. Attackers can trigger an infinite loop in the JXL or HEIF image parsers by providing a crafted image containing a box with a size of zero, causing the offset to never advance and permanently hanging the application.

NVD Source

Technical Analysis

CVE-2025-71319 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

image-size1 product
image-size
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439
ADVISORYhttps://joshua.hu/image-size-infinite-loop-dos-vulnerabilities
ADVISORYhttps://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser

All References (3)

→
https://joshua.hu/image-size-infinite-loop-dos-vulnerabilitiesExploit · Third Party Advisory
→
https://web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439Issue Tracking · Patch
→
https://www.vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parserThird Party Advisory

Quick Facts

CVE IDCVE-2025-71319
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-835
CISA KEVNo
EPSS (30d)0.10%
Affected1 vendor
PublishedJun 9, 2026

Related CVEs (CWE-835)

CVE-2026-39806
8.7
CVE-2026-27114
7.5
CVE-2026-7375
7.5
CVE-2026-29975
7.5
CVE-2026-54904
7.5
CVE-2026-44302
7.5

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2025-71319 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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