Security research · CVE-2025-59789
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json
Published Dec 1, 2025 · catalog updated Dec 1, 2025 · Apache Software Foundation Apache bRPC
Last checked Nov 4, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2025-59789. EPSS is 1.67%. Act only if a listed version of Apache Software Foundation Apache bRPC is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-81755 · Unknown
- CVE-2026-80463 · Unknown
- CVE-2026-79704 · Unknown
- CVE-2026-78334 · Unknown
- CVE-2026-78066 · Unknown
- Severity
- High7.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 1.67%
- Remediation
- Version ranges on file
- Affected products
- vendor Apache Software Foundation Apache bRPC 0 <1.15.0
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure, the parser function may run into stack overflow. Affected Scenarios: Use bRPC server with protobuf message to serve http+json requests from untrusted network. Or directly use JsonToProtoMessage to c
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Apache Software Foundation Apache bRPC 0 <1.15.00 <1.15.0
How to fix CVE-2025-59789
Upgrade
CVE-2025-59789 lists a fix boundary at 1.15.0. Compare the installed build with that boundary before you change production.
Version check
Seen in 0 <1.15.0
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-59789. EPSS is 1.67%. Act only if a listed version of Apache Software Foundation Apache bRPC is installed.
Which versions are affected?
Compare what you have installed with Apache Software Foundation Apache bRPC 0 <1.15.0 0 <1.15.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 1.67%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Dec 1, 2025 · EUVD
Detected
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure
Dec 1, 2025 · EUVD
Updated
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The rapidjson parser uses a recursive parsing method by default. If the input json has a large depth of recursive structure
Sources
- CVE.orgVulnerability recordCVE-2025-59789
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-59789
30-day exploitation probability 1.67%
first.org - EUVDVulnerability recordEUVD-2025-199979
Uncontrolled recursion in the json2pb component in Apache bRPC (version < 1.15.0) on all platforms allows remote attackers to make the server crash via sending deep recursive json data. Root Cause: The bRPC json2pb component uses rapidjson to parse json data from the network. The
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 4, 2026
- CVE.orgOct 28, 2026
- EUVDOct 28, 2026