CVE-2026-103431 (GCVE-0-2026-103431)
Vulnerability from cvelistv5 – Published: 2026-10-01 08:35 – Updated: 2026-10-01 15:24
VLAI
EPSS
VEX
Title
Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data received from remote collectl instances
Summary
colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0]).
Severity
7.7 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:24 UTC
CWE
- CWE-150 - Improper Neutralization of Escape, Meta, or Control Sequences
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-103431 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2543974 | issue-trackingx_refsource_REDHAT |
Date Public
2026-09-30 15:26
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-103431",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-01T15:24:05.431024Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T15:24:12.796Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/sharkcz/collectl",
"defaultStatus": "unaffected",
"packageName": "collectl",
"versions": [
{
"lessThan": "4.3.20.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "This issue was discovered by Laurence Oberman (Red Hat) and Nathan Scott (Red Hat)."
}
],
"datePublic": "2026-09-30T15:26:50.764Z",
"descriptions": [
{
"lang": "en",
"value": "colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0])."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T08:35:40.824Z",
"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
"shortName": "fedora"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-103431"
},
{
"name": "RHBZ#2543974",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543974"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-30T15:21:53.108Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-09-30T15:26:50.764Z",
"value": "Made public."
}
],
"title": "Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data received from remote collectl instances",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences"
}
},
"cveMetadata": {
"assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
"assignerShortName": "fedora",
"cveId": "CVE-2026-103431",
"datePublished": "2026-10-01T08:35:40.824Z",
"dateReserved": "2026-09-30T15:19:13.980Z",
"dateUpdated": "2026-10-01T15:24:12.796Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://github.com/sharkcz/collectl",
"defaultStatus": "unaffected",
"packageName": "collectl",
"versions": [
{
"lessThan": "4.3.20.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"source": "patrick@puiterwijk.org"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0])."
}
],
"id": "CVE-2026-103431",
"lastModified": "2026-10-01T16:17:36.177",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 1.3,
"impactScore": 5.8,
"source": "patrick@puiterwijk.org",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-103431",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-01T15:24:05.431024Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-10-01T09:17:07.717",
"references": [
{
"source": "patrick@puiterwijk.org",
"url": "https://access.redhat.com/security/cve/CVE-2026-103431"
},
{
"source": "patrick@puiterwijk.org",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543974"
}
],
"sourceIdentifier": "patrick@puiterwijk.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-150"
}
],
"source": "patrick@puiterwijk.org",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"current_release_date": "2026-10-01T08:03:38+00:00",
"cve": "CVE-2026-103431",
"id": "CVE-2026-103431",
"initial_release_date": "2026-09-30T15:26:50.764000+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "collectl: collectl: colmux does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-103431.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-103431",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-01T15:24:05.431024Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T15:24:09.200Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://github.com/sharkcz/collectl",
"defaultStatus": "unaffected",
"packageName": "collectl",
"versions": [
{
"lessThan": "4.3.20.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "This issue was discovered by Laurence Oberman (Red Hat) and Nathan Scott (Red Hat)."
}
],
"datePublic": "2026-09-30T15:26:50.764Z",
"descriptions": [
{
"lang": "en",
"value": "colmux in collectl before 4.3.20.2 does not sanitize ANSI/VT100 terminal escape sequences in data received from remote collectl instances before displaying it, allowing a local user on a monitored host to inject escape sequences into the terminal of an operator running colmux, via a crafted process name (argv[0])."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T08:35:40.824Z",
"orgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
"shortName": "fedora"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-103431"
},
{
"name": "RHBZ#2543974",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2543974"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-09-30T15:21:53.108Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-09-30T15:26:50.764Z",
"value": "Made public."
}
],
"title": "Collectl: collectl: colmux does not sanitize ansi/vt100 terminal escape sequences in data received from remote collectl instances",
"workarounds": [
{
"lang": "en",
"value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-150: Improper Neutralization of Escape, Meta, or Control Sequences"
}
},
"cveMetadata": {
"assignerOrgId": "92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5",
"assignerShortName": "fedora",
"cveId": "CVE-2026-103431",
"datePublished": "2026-10-01T08:35:40.824Z",
"dateReserved": "2026-09-30T15:19:13.980Z",
"dateUpdated": "2026-10-01T15:24:12.796Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
Loading…
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.
Loading…
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.
Loading…