Vulnerability · Published Oct 29, 2025 · Assigned by Go
CVE-2025-61723Quadratic complexity when parsing some invalid inputs in encoding/pem
High 7.5
In plain English
A high-severity security flaw in encoding/pem from Go standard library. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 52% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.7%top 48.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
The processing time for parsing some invalid inputs scales non-linearly with respect to the size of the input. This affects programs which parse untrusted PEM inputs.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.22 | go | 1.24.8-r0 | ALPINE-CVE-2025-61723 |
| Alpine:v3.23 | go | 1.25.2-r0 | ALPINE-CVE-2025-61723 |
| Alpine:v3.24 | go | 1.25.2-r0 | ALPINE-CVE-2025-61723 |
| Debian:12 | golang-1.19 | no fix listed | DEBIAN-CVE-2025-61723 |
| Debian:13 | golang-1.24 | no fix listed | DEBIAN-CVE-2025-61723 |
| Go | stdlib | 1.24.8, 1.25.2 | GO-2025-4009 |
| Ubuntu:22.04:LTS | golang-1.17 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.18 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.20 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:24.04:LTS | golang-1.21 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.22 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:24.04:LTS | golang-1.22 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:24.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:25.10 | golang-1.23 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:26.04:LTS | golang-1.23 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:24.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:25.10 | golang-1.24 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:26.04:LTS | golang-1.24 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:22.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:24.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:25.10 | golang-1.25 | no fix listed | UBUNTU-CVE-2025-61723 |
| Ubuntu:26.04:LTS | golang-1.25 | no fix listed | UBUNTU-CVE-2025-61723 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | encoding/pem | 0 – before 1.24.81.25.0 – before 1.25.2 |