CVE-2025-55131: nodejs node
Vulnerability summary
CVE-2025-55131 is a high (CVSS 7.1) vulnerability in nodejs node. EPSS estimates a 3.45% chance of exploitation in the next 30 days, higher than 89% of scored vulnerabilities.
Not severe (CVSS 7.1, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 32 · Related 13Timeline
- 20-01-2026PublishedVulnerability first disclosed.
- 15-07-2026Last modifiedVulnerability information updated.
Description
A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.
CVSS metrics
8 scores · 5 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- OSV · DebianEcosystem advisory · calculated7.1HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- NVDNIST7.1HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- OSV · UbuntuEcosystem advisory · calculated7.1HighCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- NVDNIST7.1HighCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
EPSS trend
Probability
3.45%
Chance of exploitation in the next 30 days
Percentile
89%
Versus all other CVEs
30-day change
Decrease -0.05 pp
From 3.51% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-120Buffer Copy without Checking Size of InputThe product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
- CWE-497Exposure of Sensitive System Information to an Unauthorized Control SphereThe product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard13 products
- eco-nodejs-20.9.0All versions (No fix recorded)
- eco-nodejs-22.16.0All versions (No fix recorded)
- nodejs-16All versions (No fix recorded)
- nodejs-18All versions (No fix recorded)
- nodejs-20< 20.20.0-r0
Wolfi11 products
- nodejs-16All versions (No fix recorded)
- nodejs-18All versions (No fix recorded)
- nodejs-20< 20.20.0-r0
- nodejs-20-doc< 20.20.0-r0
- nodejs-21All versions (No fix recorded)
Alpine1 product
- nodejs< 22.22.2-r0 | < 22.22.0-r0 | < 24.13.0-r0
Debian1 product
- nodejs< 18.20.4+dfsg-1~deb12u2 | < 20.19.2+dfsg-1+deb13u1 | < 22.22.0+dfsg+~cs22.19.6-1
Nodejs1 product
- node20.19.6 | 22.21.1 | 24.12.0 | 25.2.1 | ≥ 4.0, < 4.* | ≥ 5.0, < 5.* | ≥ 6.0, < 6.* | ≥ 7.0, < 7.* | ≥ 8.0, < 8.* | ≥ 9.0, < 9.* | ≥ 10.0, < 10.* | ≥ 11.0, < 11.* | ≥ 12.0, < 12.* | ≥ 13.0, < 13.* | ≥ 14.0, < 14.* | ≥ 15.0, < 15.* | ≥ 16.0, < 16.* | ≥ 17.0, < 17.* | ≥ 18.0, < 18.*
Ubuntu1 product
- nodejsAll versions (No fix recorded)
6 vendors · 28 products
