CVE-2023-24535: Panic when parsing invalid messages in google.golang.org/protobuf
Vulnerability summary
CVE-2023-24535 is a high (CVSS 7.5) Out-of-bounds Read vulnerability in google.golang.org/protobuf google.golang.org/protobuf/encoding/prototext. EPSS estimates a 1.09% chance of exploitation in the next 30 days, higher than 65.3% of scored vulnerabilities.
Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 0 · Related 2Timeline
- 08-06-2023PublishedVulnerability first disclosed.
- 06-01-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
6 scores · 6 sources · 1 version- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · WolfiEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · GoEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.09%
Chance of exploitation in the next 30 days
Percentile
65%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.09% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- golang-github-golang-protobuf-1-3All versions (No fix recorded)
- golang-github-golang-protobuf-1-5All versions (No fix recorded)
- golang-goprotobufAll versions (No fix recorded)
Google.golang.org/protobuf2 products
- google.golang.org/protobuf/encoding/prototext≥ 1.29.0, < 1.29.1
- google.golang.org/protobuf/internal/encoding/text≥ 1.29.0, < 1.29.1
Chainguard1 product
- ko< 0.13.0-r3
Google.golang.org1 product
- protobuf≥ 1.29.0, < 1.29.1
Protobuf1 product
- protobuf1.29.0
Wolfi1 product
- ko< 0.13.0-r3
6 vendors · 9 products
References
9 links- pkg.go.devWEB
- github.com/golang/protobufPACKAGE