Vulnerability · Published Oct 13, 2026 · Assigned by GitHub_M

CVE-2026-54086SLE API for Java: Uncontrolled Memory Allocation / handled exception leading to Denial of Service

Medium 5.3

In plain English

A medium-severity resource allocation without limits in sleapi-j from esa. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 42% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.5%top 58.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SLE API for Java is an implementation of CCSDS Space Link Extension Services. Prior to 5.1.7, the ISP1 PDU handling path decodes an attacker-controlled body length and allocates a byte array without an upper bound, while malformed or truncated input can also terminate reads unexpectedly, allowing an unauthenticated client of the SLE listening service to trigger exceptions, resource leakage, and denial of service. This issue is fixed in version 5.1.7.

Affected products (as reported)

Vendor	Product	Versions
esa	sleapi-j	< 5.1.7

Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/esa/sleapi-j/security/advisories/GHSA-6g75-jwgj-hj8v x_refsource_CONFIRM
https://github.com/esa/sleapi-j/commit/265118dfb70d1d0d991b085dcde4028c60bce4fc x_refsource_MISC
https://github.com/esa/sleapi-j/releases/tag/5.1.7 x_refsource_MISC