No exploitation reportedFix available

CVE-2023-24535

Q: Is CVE-2023-24535 actively exploited?

Active exploitation of CVE-2023-24535 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-24535?

CVE-2023-24535 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-06-08
WeaknessCWE-125

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Parsing invalid messages can panic. Parsing a text-format message which contains a potential number consisting of a minus sign, one or more characters of whitespace, and no further input will cause a panic.

Timeline

dates in UTC

2023-06-0821:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-24535?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-24535?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · OSV

Protobuf

Branch	Affected	Fixed in	Source
1.29	= 1.29.0	no fix published	NVD

google.golang.org/protobuf

Branch	Affected	Fixed in	Source
1.29	≥ 1.29.0, < 1.29.1	1.29.1	OSV

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

go.devPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-01-06
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52025-01-06
NVDCVSS 3.17.5read 2026-10-23
NVDweakness (CWE)CWE-125read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-22
OSVaffected packages—

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-06-08
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-24535?

Is CVE-2023-24535 actively exploited?

Active exploitation of CVE-2023-24535 has not been confirmed. Its EPSS score was 1.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-24535?

CVE-2023-24535 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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