CVE-2025-71329
image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
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.
- Record
CVE-2025-71329- CVSS 4.0
- 8.7 High
CVSS: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 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
EUVDEUVD-2025-210106
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.
- Record
EUVD-2025-210106- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5p2g-fcmc-qvqq
image-size: JXL and HEIF parsers allow denial of service through infinite loops
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.
- Record
GHSA-5p2g-fcmc-qvqq- CVSS 4.0
- 8.7 High
CVSS: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 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-71329- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
OSV
image-size 2.0.2 Denial of Service via Infinite Loop in JXL/HEIF Parser
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.
- Record
CVE-2025-71329- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-835
- Updated
- 2026-11-02
OSVGHSA-5p2g-fcmc-qvqq
image-size: JXL and HEIF parsers allow denial of service through infinite loops
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.
- Record
GHSA-5p2g-fcmc-qvqq- CVSS 4.0
- 8.7 High
CVSS: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 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-835
- Updated
- 2026-11-02
Show 4 moreShow less
OSVCLSA-2026-1791199971 No score
TuxCare security update for image-size (2 CVEs)
TuxCare rebuilt image-size to address 2 CVEs. Fixed in 0.5.5-tuxcare.1.
- Record
CLSA-2026-1791199971- Updated
- 2026-11-02
OSVCLSA-2026-1791200036 No score
TuxCare security update for image-size (2 CVEs)
TuxCare rebuilt image-size to address 2 CVEs. Fixed in 1.2.1-tuxcare.1.
- Record
CLSA-2026-1791200036- Updated
- 2026-11-02
OSVCLSA-2026-1791208774 No score
TuxCare security update for image-size (2 CVEs)
TuxCare rebuilt image-size to address 2 CVEs. Fixed in 2.0.2-tuxcare.1.
- Record
CLSA-2026-1791208774- Updated
- 2026-11-02
OSVROOT-APP-NPM-CVE-2025-71329 No score
CVE-2025-71329 in image-size - Patched by Root
Root has patched CVE-2025-71329 in the image-size package for Root:npm. Multiple fixed versions available.
- Record
ROOT-APP-NPM-CVE-2025-71329- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
image-sizenpm |
1.2.0 to 2.0.2 | 2.0.3 |
image-sizeTuxCare:npm From an advisory covering 2 CVEs |
0.5.5-tuxcare.0 up to 0.5.5-tuxcare.1, plus listed versions 0.5.5 |
0.5.5-tuxcare.1 |
image-sizeTuxCare:npm From an advisory covering 2 CVEs |
1.2.1-tuxcare.0 up to 1.2.1-tuxcare.1, plus listed versions 1.2.1 |
1.2.1-tuxcare.1 |
image-sizeTuxCare:npm From an advisory covering 2 CVEs |
2.0.2-tuxcare.0 up to 2.0.2-tuxcare.1, plus listed versions 2.0.2 |
2.0.2-tuxcare.1 |
image-sizenpm |
1.2.0 up to 2.0.3 | 2.0.3 |
image-sizeRoot:npm |
before 0.5.5-aikido.1 | 0.5.5-aikido.10.6.3-aikido.21.2.1-aikido.22.0.2-aikido.11.2.1-aikido.1 |
@rootio/image-sizeRoot:npm |
before 0.5.5-root.io.1 | 0.5.5-root.io.10.6.3-root.io.21.2.1-root.io.22.0.2-root.io.11.2.1-root.io.1 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | lcf2212dev/image-size-next | 2026-08-10 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-71329 is a high vulnerability (CVSS 8.7) in Image-size, published June 10, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in image-size 2.0.3.
References
joshua.hu/image-size-infinite-loop-dos-vulnerabilities
web.archive.org/web/20260224152152/https://github.com/image-size/image-size/pull/439
vulncheck.com/advisories/image-size-denial-of-service-via-infinite-loop-in-jxl-heif-parser
nvd.nist.gov/vuln/detail/CVE-2025-71329
codeberg.org/image-size/image-size/commit/e6e83a5578961de81f6d5834d90fb7430d8f29a5
github.com/advisories/GHSA-5p2g-fcmc-qvqq