CVE-2021-22918
Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is used to convert strings to ASCII.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 23.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is used to convert strings to ASCII. The pointer p is read and increased without checking whether it is beyond pe, with the latter holding a pointer to the end of the buffer. This can lead to information disclosures or crashes. This function can be triggered via uv_getaddrinfo().
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 23.13% probability · 98th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- nodejs/node.js · siemens/sinec infrastructure network services
- Source
- support@hackerone.com
EPSS 23.1% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://hackerone.com/reports/1209681Exploit, Third Party Advisory
- https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202401-23
- https://security.netapp.com/advisory/ntap-20210805-0003/Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
- https://hackerone.com/reports/1209681Exploit, Third Party Advisory
- https://nodejs.org/en/blog/vulnerability/july-2021-security-releases/Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202401-23
- https://security.netapp.com/advisory/ntap-20210805-0003/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.