CVE-2026-48712: protobufjs protobuf.js · Uncontrolled Recursion
Affects protobufjs protobuf.jsSource CVE Database V5
Not known to be exploited · CVSS 7.5 High : upgrade to 8.4.1 or 7.6.1 soon.
Data as of 5 Nov 2026, 23:24 UTC
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 40% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 8.4.1, 7.6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 22 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade protobuf.js and protobufjs/protobuf.js to 8.4.1 or 7.6.1.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| protobufjsprotobuf.js | Affected
| Fixed in
|
| protobufjsprotobuf.js | Affected
| Fixed in
|
npmprotobufjs/protobuf.jspkg:npm/protobufjs/protobuf.jsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade protobuf.js to version 7.6.1 or later if using versions prior to 7.6.1, or to version 8.4.1 or later if using versions between 8.0.0 and before 8.4.1. These versions contain the fix for the uncontrolled recursion vulnerability. Patch status is confirmed by the version information in the advisory. No other mitigation is indicated.
Description
protobufjs compiles protobuf definitions into JavaScript (JS) functions. Prior to 7.6.1 and 8.4.1, protobufjs could recurse without a depth limit while converting decoded messages to plain objects or JSON. This affected generated toObject() conversion and the custom google.protobuf.Any JSON conversion path. A crafted protobuf binary payload containing deeply nested Any values could cause the JavaScript call stack to be exhausted during conversion to JSON. This vulnerability is fixed in 7.6.1 and 8.4.1.