golang: Fix of 5 CVEs
- CVE-2026-33818: encoding/asn1 - enforce a maximum recursion depth in parseField and parseSequenceOf, so a deeply nested crafted DER payload can no longer exhaust the stack while unmarshalling - CVE-2026-56862: crypto/tls - only treat application data, and handshake records seen before the handshake completes, as state-advancing, so a peer can no longer spam post-handshake KeyUpdate messages to force unbounded key derivation - CVE-2026-56860: net/url - resolve reference paths on a byte buffer with index-based backtracking instead of rebuilding a string on every ".." segment, removing the quadratic time and allocation cost - CVE-2026-56859: encoding/xml - track unmarshal depth on the decoder stack instead of a local counter that DecodeElement reset, so a custom UnmarshalXML implementation can no longer bypass the depth limit and exhaust the stack - CVE-2026-56858: html/template - keep the JavaScript regexp/division context up to date across brace transitions, so pathological input can no longer close an unescaped '/' early and inject arbitrary content
- Products
- go-toolset, golang, golang-bin, golang-docs, golang-misc, golang-src, golang-tests
- Affected versions
- Not specified
- Fixed versions
- 1.22.9-1.el9_2.tuxcare.els26
- CVEs
- CVE-2026-33818, CVE-2026-56858, CVE-2026-56859, CVE-2026-56860, CVE-2026-56862
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 11:51 UTC · Revision 1
Source evidence
- CVE-2026-33818: encoding/asn1 - enforce a maximum recursion depth in parseField and parseSequenceOf, so a deeply nested crafted DER payload can no longer exhaust the stack while unmarshalling - CVE-2026-56862: crypto/tls - only treat application data, and handshake records seen before the handshake completes, as state-advancing, so a peer can no longer spam post-handshake KeyUpdate messages to force unbounded key derivation - CVE-2026-56860: net/url - resolve reference paths on a byte buffer with index-based backtracking instead of rebuilding a string on every ".." segment, removing the quadratic time and allocation cost - CVE-2026-56859: encoding/xml - track unmarshal depth on the decoder stack instead of a local counter that DecodeElement reset, so a custom UnmarshalXML implementation can no longer bypass the depth limit and exhaust the stack - CVE-2026-56858: html/template - keep the JavaScript regexp/division context up to date across brace transitions, so pathological input can no longer close an unescaped '/' early and inject arbitrary content
osv:CLSA-2026-1787999176
go-toolset
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang-bin
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang-docs
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang-misc
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang-src
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
golang-tests
Fixed versions: 1.22.9-1.el9_2.tuxcare.els26
Complete source record
{
"id": "3ad8c4394e9251afa441fe5294991dec00e183b5467c66e34b177e1da5c77ef5",
"url": "https://osv.dev/vulnerability/CLSA-2026-1787999176",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "golang: Fix of 5 CVEs",
"summary": "- CVE-2026-33818: encoding/asn1 - enforce a maximum recursion depth in parseField and parseSequenceOf, so a deeply nested crafted DER payload can no longer exhaust the stack while unmarshalling - CVE-2026-56862: crypto/tls - only treat application data, and handshake records seen before the handshake completes, as state-advancing, so a peer can no longer spam post-handshake KeyUpdate messages to force unbounded key derivation - CVE-2026-56860: net/url - resolve reference paths on a byte buffer with index-based backtracking instead of rebuilding a string on every \"..\" segment, removing the quadratic time and allocation cost - CVE-2026-56859: encoding/xml - track unmarshal depth on the decoder stack instead of a local counter that DecodeElement reset, so a custom UnmarshalXML implementation can no longer bypass the depth limit and exhaust the stack - CVE-2026-56858: html/template - keep the JavaScript regexp/division context up to date across brace transitions, so pathological input can no longer close an unescaped '/' early and inject arbitrary content",
"evidence": "osv:CLSA-2026-1787999176",
"products": [
{
"name": {
"value": "go-toolset",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang-bin",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang-docs",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang-misc",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang-src",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/5/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "golang-tests",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "1.22.9-1.el9_2.tuxcare.els26",
"evidence": "/affected/6/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CLSA-2026-1787999176",
"aliases": [
"CLSA-2026-1787999176"
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "go-toolset",
"purl": "pkg:rpm/tuxcare/go-toolset?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang",
"purl": "pkg:rpm/tuxcare/golang?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang-bin",
"purl": "pkg:rpm/tuxcare/golang-bin?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang-docs",
"purl": "pkg:rpm/tuxcare/golang-docs?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang-misc",
"purl": "pkg:rpm/tuxcare/golang-misc?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang-src",
"purl": "pkg:rpm/tuxcare/golang-src?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.22.9-1.el9_2.tuxcare.els26"
}
]
}
],
"package": {
"name": "golang-tests",
"purl": "pkg:rpm/tuxcare/golang-tests?distro=almalinux-9.2",
"ecosystem": "TuxCare:AlmaLinux:9.2"
},
"database_specific": {
"source": "https://github.com/cloudlinux/tuxcare-osv/tree/main/data/els_os/almalinux9.2esu/CLSA-2026-1787999176.json"
}
}
],
"modified": "2026-10-26T09:43:34.858982133Z",
"provider": "osv",
"upstream": [
"CVE-2026-33818",
"CVE-2026-56858",
"CVE-2026-56859",
"CVE-2026-56860",
"CVE-2026-56862"
],
"references": [
"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2026-1787999176.html",
"https://nvd.nist.gov/vuln/detail/CVE-2026-33818",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56858",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56859",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56860",
"https://nvd.nist.gov/vuln/detail/CVE-2026-56862"
]
},
"related_cves": [
{
"value": "CVE-2026-33818",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56858",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56859",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56860",
"evidence": "/upstream"
},
{
"value": "CVE-2026-56862",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 450002,
"published_at": "2026-08-29T10:26:29+00:00"
}