Critical
Security advisory
The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7126
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:13 UTC · Revision 1
Source evidence
The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.
osv:CVE-2016-7126
Complete source record
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"id": "11ad8f360f94d2779e934792415443532d9dac086dd6c6ca0e2d990af00d415c",
"url": "https://osv.dev/vulnerability/CVE-2016-7126",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7126",
"summary": "The imagetruecolortopalette function in ext/gd/gd.c in PHP before 5.6.25 and 7.x before 7.0.10 does not properly validate the number of colors, which allows remote attackers to cause a denial of service (select_colors allocation error and out-of-bounds write) or possibly have unspecified other impact via a large value in the third argument.",
"evidence": "osv:CVE-2016-7126",
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"POST_PHP7_NSAPI_REMOVAL",
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"PRE_PHP7_REMOVALS",
"POST_PHP7_REMOVALS",
"POST_AST_MERGE",
"PRE_AST_MERGE",
"POST_64BIT_BRANCH_MERGE",
"PRE_64BIT_BRANCH_MERGE",
"POST_PHPNG_MERGE"
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"database_specific": {
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"modified": "2026-10-20T13:23:24.274804700Z",
"provider": "osv",
"references": [
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"https://www.tenable.com/security/tns-2016-19",
"https://bugs.php.net/bug.php?id=72697",
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"source_id": "core-osv",
"document_id": 387600,
"published_at": "2016-09-12T01:59:04.723+00:00"
}