CVE-2026-29795

stellar-xdr is a library and CLI containing types and functionality for working with Stellar XDR. Prior to version 25.0.1, StringM::from_str does not validate that the input length is within the declared maximum (MAX). Calling StringM::<N>::from_str(s) where s is longer than N bytes succeeds and returns an Ok value instead of Err(Error::LengthExceedsMax), producing a StringM that violates its length invariant. This affects any code that constructs StringM values from string input using FromStr (including str::parse), and relies on the type's maximum length constraint being enforced. An oversized StringM could propagate through serialization, validation, or other logic that assumes the invariant holds. This issue has been patched in version 25.0.1.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/stellar/rs-stellar-xdr/commit/1f840013c3e2fca0321fb844b048afa01d10dda6	Patch
https://github.com/stellar/rs-stellar-xdr/issues/499	Issue Tracking
https://github.com/stellar/rs-stellar-xdr/pull/500	Issue Tracking Patch
https://github.com/stellar/rs-stellar-xdr/security/advisories/GHSA-x57h-xx53-v53w	Mitigation Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:stellar:stellar-xdr:*:*:*:*:*:rust:*:*

History

No history.

Information

Published : 2026-03-06 21:16

Updated : 2026-03-18 18:46

NVD link : CVE-2026-29795

Mitre link : CVE-2026-29795

CVE.ORG link : CVE-2026-29795

JSON object : View

Products Affected

stellar

stellar-xdr

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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