CVE-2023-46135

Panic in SignedPayload::from_payload

5.3 MediumFix available

rs-stellar-strkey is a Rust lib for encode/decode of Stellar Strkeys. A panic vulnerability occurs when a specially crafted payload is used.inner_payload_len should not above 64. This vulnerability has been patched in version 0.0.8.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.95%Up 0.9 points since Oct 25, 2023

What each source reports

CVE List Score used 5.3

Panic in SignedPayload::from_payload

Record: CVE-2023-46135
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-248
Updated: 2026-11-02

EUVDEUVD-2023-2655 5.3

Record: EUVD-2023-2655
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-5873-6fwq-463f 5.3

stellar-strkey vulnerable to panic in SignedPayload::from_payload

Impact

Panic vulnerability when a specially crafted payload is used. This is because of the following calculation:

inner_payload_len + (4 - inner_payload_len % 4) % 4

If inner_payload_len is 0xffffffff, (4 - inner_payload_len % 4) % 4 = 1 so

inner_payload_len + (4 - inner_payload_len % 4) % 4 = u32::MAX + 1

which overflow.

Patches

Check that inner_payload_len is not above 64 which should never be the case. Patched in version 0.0.8

Workarounds

Sanitize input payload before it is passed to the vulnerable function so that bytes in payload[32..32+4] and parsed as a u32 is not above 64.

References

GitHub issue #58

Record: GHSA-5873-6fwq-463f
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-248
Updated: 2026-11-02

NVD 5.3

Record: CVE-2023-46135
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-248
Updated: 2026-11-02

OSV 5.3

Panic in SignedPayload::from_payload

Record: CVE-2023-46135
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-248
Updated: 2026-11-02

OSVGHSA-5873-6fwq-463f 5.3

stellar-strkey vulnerable to panic in SignedPayload::from_payload

Impact

Panic vulnerability when a specially crafted payload is used. This is because of the following calculation:

inner_payload_len + (4 - inner_payload_len % 4) % 4

If inner_payload_len is 0xffffffff, (4 - inner_payload_len % 4) % 4 = 1 so

inner_payload_len + (4 - inner_payload_len % 4) % 4 = u32::MAX + 1

which overflow.

Patches

Check that inner_payload_len is not above 64 which should never be the case. Patched in version 0.0.8

Workarounds

Sanitize input payload before it is passed to the vulnerable function so that bytes in payload[32..32+4] and parsed as a u32 is not above 64.

References

GitHub issue #58

Record: GHSA-5873-6fwq-463f
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-248
Updated: 2026-11-02

Affected products

stellar rs-stellar-strkey

Affected packages

Affected packages
Package	Affected	Fixed
`stellar-strkey` crates.io	before 0.0.8	0.0.8

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-46135 is a medium vulnerability (CVSS 5.3) in Stellar Rs-stellar-strkey, published October 25, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.95%, the 61st percentile. Fixed in stellar-strkey 0.0.8.