CVE-2026-54594 (GCVE-0-2026-54594)
Vulnerability from cvelistv5 – Published: 2026-09-17 19:51 – Updated: 2026-09-18 20:09
VLAI
EPSS
VEX
Title
OmniBlocks: Spamming in Discussions tab possible via disc.yml
Summary
OmniBlocks is a monorepo for the OmniBlocks project. Prior to the June 6, 2026 workflow remediation, .github/workflows/disc.yml runs for the issues opened event and the issues edited event and invokes the createDiscussion mutation whenever an issue is classified as off-topic, without recording that the issue was already converted or otherwise suppressing duplicate runs. A user who creates one off-topic issue and repeatedly edits its description before conversion completes can therefore cause multiple discussions to be created for the same issue, producing discussion spam and additional moderation work. This issue is fixed with commit 627e0f0a16a7d74b09128106b57dd7e85d2545df.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-18 20:09 UTC
CWE
- CWE-799 - Improper Control of Interaction Frequency
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/OmniBlocks/monorepo/security/a… | x_refsource_CONFIRM |
| https://github.com/OmniBlocks/monorepo/commit/295… | x_refsource_MISC |
| https://github.com/OmniBlocks/monorepo/commit/627… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| OmniBlocks | monorepo |
Affected:
< OmniBlocks
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-54594",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-18T20:09:08.371650Z",
"version": "2.0.3"
},
"type": "ssvc"
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}
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"providerMetadata": {
"dateUpdated": "2026-09-18T20:09:27.955Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/OmniBlocks/monorepo/security/advisories/GHSA-pq9c-3595-72jq"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "monorepo",
"vendor": "OmniBlocks",
"versions": [
{
"status": "affected",
"version": "\u003c OmniBlocks"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "OmniBlocks is a monorepo for the OmniBlocks project. Prior to the June 6, 2026 workflow remediation, .github/workflows/disc.yml runs for the issues opened event and the issues edited event and invokes the createDiscussion mutation whenever an issue is classified as off-topic, without recording that the issue was already converted or otherwise suppressing duplicate runs. A user who creates one off-topic issue and repeatedly edits its description before conversion completes can therefore cause multiple discussions to be created for the same issue, producing discussion spam and additional moderation work. This issue is fixed with commit 627e0f0a16a7d74b09128106b57dd7e85d2545df."
}
],
"metrics": [
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"attackRequirements": "NONE",
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"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
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"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
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"problemTypes": [
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"descriptions": [
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"description": "CWE-799: Improper Control of Interaction Frequency",
"lang": "en",
"type": "CWE"
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"references": [
{
"name": "https://github.com/OmniBlocks/monorepo/security/advisories/GHSA-pq9c-3595-72jq",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/OmniBlocks/monorepo/security/advisories/GHSA-pq9c-3595-72jq"
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{
"name": "https://github.com/OmniBlocks/monorepo/commit/2953ef77649fc3c206fc1ee306f74cedc31b67e3",
"tags": [
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"tags": [
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"source": {
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"discovery": "UNKNOWN"
},
"title": "OmniBlocks: Spamming in Discussions tab possible via disc.yml"
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"datePublished": "2026-09-17T19:51:32.309Z",
"dateReserved": "2026-06-15T19:45:23.539Z",
"dateUpdated": "2026-09-18T20:09:27.955Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
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"date": "2026-10-02",
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"percentile": "0.3692"
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"nvd": {
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"vendor": "OmniBlocks",
"versions": [
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"version": "\u003c OmniBlocks"
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"cveTags": [],
"descriptions": [
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"lang": "en",
"value": "OmniBlocks is a monorepo for the OmniBlocks project. Prior to the June 6, 2026 workflow remediation, .github/workflows/disc.yml runs for the issues opened event and the issues edited event and invokes the createDiscussion mutation whenever an issue is classified as off-topic, without recording that the issue was already converted or otherwise suppressing duplicate runs. A user who creates one off-topic issue and repeatedly edits its description before conversion completes can therefore cause multiple discussions to be created for the same issue, producing discussion spam and additional moderation work. This issue is fixed with commit 627e0f0a16a7d74b09128106b57dd7e85d2545df."
}
],
"id": "CVE-2026-54594",
"lastModified": "2026-09-23T18:12:04.247",
"metrics": {
"cvssMetricV40": [
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"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
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"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
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"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "security-advisories@github.com",
"type": "Secondary"
}
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"timestamp": "2026-09-18T20:09:08.371650Z",
"version": "2.0.3"
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}
],
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"attackVector": "NETWORK",
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"privilegesRequired": "LOW",
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"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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],
"source": {
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"discovery": "UNKNOWN"
},
"title": "OmniBlocks: Spamming in Discussions tab possible via disc.yml"
}
},
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"datePublished": "2026-09-17T19:51:32.309Z",
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"dateUpdated": "2026-09-18T20:09:27.955Z",
"state": "PUBLISHED"
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}
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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.
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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.
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