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UK Cyber Defence
VulnerabilityDeferred

CVE-2024-51502

loona is an experimental, HTTP/1.1 and HTTP/2 implementation in Rust on top of io-uring. `loona-hpack` suffers from the same vulnerability as the original `hpack` as documented in issue #11.

MEDIUM 5.1EPSS 0.48%

Does this matter?

Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.

Description

loona is an experimental, HTTP/1.1 and HTTP/2 implementation in Rust on top of io-uring. `loona-hpack` suffers from the same vulnerability as the original `hpack` as documented in issue #11. All users who try to decode untrusted input using the Decoder are vulnerable to this exploit. This issue has been addressed in release version 0.4.3. All users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS 4.0
5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS
0.48% probability · 41th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-755
Source
security-advisories@github.com
EPSS trend
0%3%5%26 October 2026: 0.48%26 October 202626 October 2026

EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.