ALPINE-CVE-2026-40930
LIBPNG is a reference library for use in applications that process PNG (Portable Network Graphics) raster image files. In version 1.8.0, three inter-frame chunk discard paths in the push-mode APNG parser clear the chunk-header flag without consuming the chunk body and CRC, allowing attacker-controlled bytes inside an ignored ancillary chunk to be reinterpreted as a fresh chunk header on the next call to `png_process_data`. Commit faf06924688b62d7c1654b5ceddedbde66ffadb4 fixes the issue.
ALPINE-CVE-2026-40930
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:ALPINE-CVE-2026-40930
libpng
Source reference: /affected/0/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.6.59-r0
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
libpng
Source reference: /affected/1/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.6.59-r0
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
libpng
Source reference: /affected/2/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.6.58-r1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
libpng
Source reference: /affected/3/package/name
- Affected versions
- Not stated in this record
- Fixed versions
- 1.6.58-r1
Source reference:
/affected/3/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.59-r0"
}
]
}
],
"package": {
"name": "libpng",
"purl": "pkg:apk/alpine/libpng?arch=source",
"ecosystem": "Alpine:v3.21"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40930.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.59-r0"
}
]
}
],
"package": {
"name": "libpng",
"purl": "pkg:apk/alpine/libpng?arch=source",
"ecosystem": "Alpine:v3.22"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40930.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.58-r1"
}
]
}
],
"package": {
"name": "libpng",
"purl": "pkg:apk/alpine/libpng?arch=source",
"ecosystem": "Alpine:v3.23"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40930.json"
},
"ecosystem_specific": {}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.6.58-r1"
}
]
}
],
"package": {
"name": "libpng",
"purl": "pkg:apk/alpine/libpng?arch=source",
"ecosystem": "Alpine:v3.24"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-40930.json"
},
"ecosystem_specific": {}
}
]Publisher severity
No explicit severity was provided.
- Event
- #54350 · Revision 1
- Added to Heist Feed
- Publisher date