CVE-2026-22026 | THREATINT

Description

CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, the libcurl write_callback function in the KMC crypto service client allows unbounded memory growth by reallocating response buffers without any size limit or overflow check. A malicious KMC server can return arbitrarily large HTTP responses, forcing the client to allocate excessive memory until the process is terminated by the OS. This issue has been patched in version 1.4.3.

PUBLISHED Reserved 2026-01-05 | Published 2026-01-10 | Updated 2026-01-10 | Assigner GitHub_M

HIGH: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-789: Memory Allocation with Excessive Size Value

Product status

< 1.4.3

affected

References

github.com/...ptoLib/security/advisories/GHSA-w9cm-q69w-34x7

github.com/...ommit/2372efd3da1ccb226b4297222e25f41ecc84821d

github.com/nasa/CryptoLib/releases/tag/v1.4.3

cve.org (CVE-2026-22026)

nvd.nist.gov (CVE-2026-22026)

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