OPENSUSE-SU-2026:20479-1
Vulnerability from csaf_opensuse - Published: 2026-04-20 14:56 - Updated: 2026-09-17 17:29Summary
Security update for clamav
Severity
Moderate
Notes
Title of the patch: Security update for clamav
Description of the patch: This update for clamav fixes the following issues:
Update to clamav 1.5.2:
Security issue:
- CVE-2026-20031: improper error handling in the HTML CSS module when splitting UTF-8 strings can lead to denial of
service conditions via a crafted HTML file (bsc#1259207).
Non security issue:
- Support transactional updates (jsc#PED-14819).
Changelog:
* Fixed a possible infinite loop when scanning some JPEG files by
upgrading affected ClamAV dependency, a Rust image library.
* The CVD verification process will now ignore certificate files
in the CVD certs directory when the user lacks read permissions.
* Freshclam: Fix CLD verification bug with PrivateMirror option.
* Upgraded the Rust bytes dependency to a newer version to
resolve RUSTSEC-2026-0007 advisory.
* Fixed a possible crash caused by invalid pointer alignment on
some platforms.
Patchnames: openSUSE-Leap-16.0-487
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
5.3 (Medium)
Affected products
Recommended
25 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: openSUSE Leap 16.0:clamav-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-devel-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-devel-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-devel-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-devel-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-docs-html-0:1.5.2-160000.1.1.noarch | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-milter-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-milter-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-milter-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:clamav-milter-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclamav12-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclamav12-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclamav12-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclamav12-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclammspack0-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclammspack0-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclammspack0-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libclammspack0-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libfreshclam4-0:1.5.2-160000.1.1.aarch64 | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libfreshclam4-0:1.5.2-160000.1.1.ppc64le | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libfreshclam4-0:1.5.2-160000.1.1.s390x | — |
Vendor Fix
|
|
| Unresolved product id: openSUSE Leap 16.0:libfreshclam4-0:1.5.2-160000.1.1.x86_64 | — |
Vendor Fix
|
Threats
Impact
moderate
References
8 references
{
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"text": "moderate"
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"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
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"tlp": {
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{
"category": "summary",
"text": "Security update for clamav",
"title": "Title of the patch"
},
{
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"text": "This update for clamav fixes the following issues:\n\nUpdate to clamav 1.5.2:\n\nSecurity issue:\n\n- CVE-2026-20031: improper error handling in the HTML CSS module when splitting UTF-8 strings can lead to denial of\n service conditions via a crafted HTML file (bsc#1259207).\n\nNon security issue:\n\n- Support transactional updates (jsc#PED-14819).\n\nChangelog:\n\n * Fixed a possible infinite loop when scanning some JPEG files by\n upgrading affected ClamAV dependency, a Rust image library.\n * The CVD verification process will now ignore certificate files\n in the CVD certs directory when the user lacks read permissions.\n * Freshclam: Fix CLD verification bug with PrivateMirror option.\n * Upgraded the Rust bytes dependency to a newer version to\n resolve RUSTSEC-2026-0007 advisory.\n * Fixed a possible crash caused by invalid pointer alignment on\n some platforms.\n",
"title": "Description of the patch"
},
{
"category": "details",
"text": "openSUSE-Leap-16.0-487",
"title": "Patchnames"
},
{
"category": "legal_disclaimer",
"text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
"title": "Terms of use"
}
],
"publisher": {
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"namespace": "https://www.suse.com/"
},
"references": [
{
"category": "external",
"summary": "SUSE ratings",
"url": "https://www.suse.com/support/security/rating/"
},
{
"category": "self",
"summary": "URL of this CSAF notice",
"url": "https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_20479-1.json"
},
{
"category": "self",
"summary": "SUSE Bug 1221954",
"url": "https://bugzilla.suse.com/1221954"
},
{
"category": "self",
"summary": "SUSE Bug 1258072",
"url": "https://bugzilla.suse.com/1258072"
},
{
"category": "self",
"summary": "SUSE Bug 1259207",
"url": "https://bugzilla.suse.com/1259207"
},
{
"category": "self",
"summary": "SUSE CVE CVE-2026-20031 page",
"url": "https://www.suse.com/security/cve/CVE-2026-20031/"
}
],
"title": "Security update for clamav",
"tracking": {
"current_release_date": "2026-09-17T17:29:46Z",
"generator": {
"date": "2026-04-20T14:56:29Z",
"engine": {
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"version": "1"
}
},
"id": "openSUSE-SU-2026:20479-1",
"initial_release_date": "2026-04-20T14:56:29Z",
"revision_history": [
{
"date": "2026-04-20T14:56:29Z",
"number": "1",
"summary": "Current version"
},
{
"date": "2026-09-16T20:32:35Z",
"number": "2",
"summary": "unknown changes"
},
{
"date": "2026-09-16T21:35:19Z",
"number": "3",
"summary": "unknown changes"
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{
"date": "2026-09-17T17:29:46Z",
"number": "4",
"summary": "unknown changes"
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],
"status": "final",
"version": "4"
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},
"product_tree": {
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{
"branches": [
{
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{
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"product_id": "clamav-0:1.5.2-160000.1.1.aarch64",
"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/clamav@1.5.2-160000.1.1?arch=aarch64\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "clamav-devel-0:1.5.2-160000.1.1.aarch64",
"product": {
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},
{
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"name": "clamav-milter-0:1.5.2-160000.1.1.aarch64",
"product": {
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"product_identification_helper": {
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},
{
"category": "product_version",
"name": "libclamav12-0:1.5.2-160000.1.1.aarch64",
"product": {
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"product_id": "libclamav12-0:1.5.2-160000.1.1.aarch64",
"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/libclamav12@1.5.2-160000.1.1?arch=aarch64\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "libclammspack0-0:1.5.2-160000.1.1.aarch64",
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"product_identification_helper": {
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},
{
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{
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"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/clamav-milter@1.5.2-160000.1.1?arch=ppc64le\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "libclamav12-0:1.5.2-160000.1.1.ppc64le",
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"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/libclamav12@1.5.2-160000.1.1?arch=ppc64le\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
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{
"category": "product_version",
"name": "libclammspack0-0:1.5.2-160000.1.1.ppc64le",
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{
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"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
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}
}
}
],
"category": "architecture",
"name": "ppc64le"
},
{
"branches": [
{
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"name": "clamav-0:1.5.2-160000.1.1.s390x",
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}
},
{
"category": "product_version",
"name": "clamav-devel-0:1.5.2-160000.1.1.s390x",
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{
"category": "product_version",
"name": "clamav-milter-0:1.5.2-160000.1.1.s390x",
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}
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},
{
"category": "product_version",
"name": "libclamav12-0:1.5.2-160000.1.1.s390x",
"product": {
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"product_identification_helper": {
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}
}
},
{
"category": "product_version",
"name": "libclammspack0-0:1.5.2-160000.1.1.s390x",
"product": {
"name": "libclammspack0-0:1.5.2-160000.1.1.s390x",
"product_id": "libclammspack0-0:1.5.2-160000.1.1.s390x",
"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/libclammspack0@1.5.2-160000.1.1?arch=s390x\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
"name": "libfreshclam4-0:1.5.2-160000.1.1.s390x",
"product": {
"name": "libfreshclam4-0:1.5.2-160000.1.1.s390x",
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"product_identification_helper": {
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"purl": "pkg:rpm/suse/libfreshclam4@1.5.2-160000.1.1?arch=s390x\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
}
],
"category": "architecture",
"name": "s390x"
},
{
"branches": [
{
"category": "product_version",
"name": "clamav-0:1.5.2-160000.1.1.x86_64",
"product": {
"name": "clamav-0:1.5.2-160000.1.1.x86_64",
"product_id": "clamav-0:1.5.2-160000.1.1.x86_64",
"product_identification_helper": {
"cpe": "cpe:2.3:a:clamav:clamav:1.5.2:*:*:*:*:*:*:*",
"purl": "pkg:rpm/suse/clamav@1.5.2-160000.1.1?arch=x86_64\u0026upstream=clamav-0:1.5.2-160000.1.1.src.rpm"
}
}
},
{
"category": "product_version",
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}
],
"threats": [
{
"category": "impact",
"date": "2026-04-20T14:56:29Z",
"details": "moderate"
}
],
"title": "CVE-2026-20031"
}
]
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.