CVE-2026-47859 json
Unbounded memory allocation in RFC6587SyslogDeserializer (octet-counted framing) — remote DoS
published 2026-08-26 2 mo ago modified 2026-09-04 2 mo ago also EUVD-2026-66825
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
RFC6587SyslogDeserializer, used by the Spring Integration syslog TCP inbound adapter to decode RFC 6587 / RFC 5424 frames, trusts the sender-supplied octet count of an octet-counted frame and allocates a byte array of exactly that size with no upper bound. Spring Integration 7.1.0 Spring Integration 7.0.0 - 7.0.5 Spring Integration 6.5.0 - 6.5.10 Spring Integration 6.4.0 - 6.4.12 Spring Integration 5.5.21 and earlier
Patch / fix
- vmware spring_integration 5.5.22, 6.4.13, 6.5.11, 7.0.5.1, 7.1.0.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Affected products
- Spring Spring Integration
Classification
- Weakness
-
- CWE-770 Allocation of Resources Without Limits or Throttling
References
-
spring.io
/security/cve-2026-47859
vendor-advisory
Sources
- CVE List CVE-2026-47859
- NVD CVE-2026-47859
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