CVE Details
CVE-2026-114713
UnrealIRCd Improper Neutralization of Delimiters Vulnerability
Published: 2026-11-13
CVSS: 8.6 HIGH
Product: UnrealIRCd UnrealIRCd
Due Date: 2026-11-16
UnrealIRCd UnrealIRCd contains an improper neutralization of delimiters vulnerability that allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority.
GitHub PoC
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No GitHub PoC data.
FIRST EPSS
EPSS estimates the probability of exploitation in the next 30 days. Higher values indicate higher likelihood of real-world exploitation.
Timeline
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References
Show Raw Data
| Key | Remaining Key | Value |
|---|---|---|
| dataType | CVE_RECORD | |
| dataVersion | 5.2 | |
| cveMetadata > | cveId | CVE-2026-114713 |
| cveMetadata > | assignerOrgId | 8254265b-2729-46b6-b9e3-3dfca2d5bfca |
| cveMetadata > | state | PUBLISHED |
| cveMetadata > | assignerShortName | mitre |
| cveMetadata > | dateReserved | 2026-10-22T00:56:41.381Z |
| cveMetadata > | datePublished | 2026-11-08T02:31:48.387Z |
| cveMetadata > | dateUpdated | 2026-11-13T19:05:05.443Z |
| containers > | cna > affected > 0 > defaultStatus | unaffected |
| containers > | cna > affected > 0 > modules > 0 | labeled-response |
| containers > | cna > affected > 0 > product | UnrealIRCd |
| containers > | cna > affected > 0 > programFiles > 0 | src/modules/labeled-response.c |
| containers > | cna > affected > 0 > programRoutines > 0 > name | labeled_response_mtag_is_ok() |
| containers > | cna > affected > 0 > repo | https://github.com/unrealircd/unrealircd |
| containers > | cna > affected > 0 > vendor | UnrealIRCd |
| containers > | cna > affected > 0 > versions > 0 > lessThan | 6.2.7.1 |
| containers > | cna > affected > 0 > versions > 0 > status | affected |
| containers > | cna > affected > 0 > versions > 0 > version | 0 |
| containers > | cna > affected > 0 > versions > 0 > versionType | custom |
| containers > | cna > descriptions > 0 > lang | en |
| containers > | cna > descriptions > 0 > value | The labeled-response module in UnrealIRCd 6.0.0 before 6.2.7.1 does not escape the IRCv3 "label" message tag when echoing it into replies, which allows any user on a network with two or more linked servers to inject server-to-server commands that are executed with server authority. |
| containers > | cna > metrics > 0 > cvssV3_1 > attackComplexity | LOW |
| containers > | cna > metrics > 0 > cvssV3_1 > attackVector | NETWORK |
| containers > | cna > metrics > 0 > cvssV3_1 > availabilityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > baseScore | 8.6 |
| containers > | cna > metrics > 0 > cvssV3_1 > baseSeverity | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > confidentialityImpact | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > integrityImpact | HIGH |
| containers > | cna > metrics > 0 > cvssV3_1 > privilegesRequired | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > scope | CHANGED |
| containers > | cna > metrics > 0 > cvssV3_1 > userInteraction | NONE |
| containers > | cna > metrics > 0 > cvssV3_1 > vectorString | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |
| containers > | cna > metrics > 0 > cvssV3_1 > version | 3.1 |
| containers > | cna > metrics > 0 > format | CVSS |
| containers > | cna > metrics > 0 > scenarios > 0 > lang | en |
| containers > | cna > metrics > 0 > scenarios > 0 > value | GENERAL |
| containers > | cna > problemTypes > 0 > descriptions > 0 > cweId | CWE-140 |
| containers > | cna > problemTypes > 0 > descriptions > 0 > description | CWE-140 Improper Neutralization of Delimiters |
| containers > | cna > problemTypes > 0 > descriptions > 0 > lang | en |
| containers > | cna > problemTypes > 0 > descriptions > 0 > type | CWE |
| containers > | cna > providerMetadata > orgId | 8254265b-2729-46b6-b9e3-3dfca2d5bfca |
| containers > | cna > providerMetadata > shortName | mitre |
| containers > | cna > providerMetadata > dateUpdated | 2026-11-08T02:31:48.387Z |
| containers > | cna > references > 0 > url | https://www.unrealircd.org/ |
| containers > | cna > references > 1 > url | https://www.unrealircd.org/index/news |
| containers > | cna > references > 2 > url | https://forums.unrealircd.org/viewtopic.php?t=9487 |
| containers > | cna > solutions > 0 > lang | en |
| containers > | cna > solutions > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > solutions > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > solutions > 0 > supportingMedia > 0 > value | Upgrade to UnrealIRCd 6.2.7.1 or later. Alternatively, apply the hot-patch to fix the issue without restart: ./unrealircd hot-patch bundle-20261107 |
| containers > | cna > solutions > 0 > value | Upgrade to UnrealIRCd 6.2.7.1 or later. Alternatively, apply the hot-patch to fix the issue without restart: ./unrealircd hot-patch bundle-20261107 |
| containers > | cna > workarounds > 0 > lang | en |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > base64 | False |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > type | text/html |
| containers > | cna > workarounds > 0 > supportingMedia > 0 > value | Add the following line to the configuration file of all servers until the patch or upgrade is applied: blacklist-module "labeled-response"; |
| containers > | cna > workarounds > 0 > value | Add the following line to the configuration file of all servers until the patch or upgrade is applied: blacklist-module "labeled-response"; |
| containers > | cna > x_generator > engine | CVE-Request-form 0.0.1 |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > operator | OR |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > negate | False |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > vulnerable | True |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > criteria | cpe:2.3:a:unrealircd:unrealircd:*:*:*:*:*:*:*:* |
| containers > | cna > cpeApplicability > 0 > nodes > 0 > cpeMatch > 0 > versionEndExcluding | 6.2.7.1 |
| containers > | adp > 0 > title | CVE Program Container |
| containers > | adp > 0 > references > 0 > url | http://www.openwall.com/lists/oss-security/2026/11/08/1 |
| containers > | adp > 0 > providerMetadata > orgId | af854a3a-2127-422b-91ae-364da2661108 |
| containers > | adp > 0 > providerMetadata > shortName | CVE |
| containers > | adp > 0 > providerMetadata > dateUpdated | 2026-11-08T11:04:43.329Z |
| containers > | adp > 1 > metrics > 0 > other > type | ssvc |
| containers > | adp > 1 > metrics > 0 > other > content > id | CVE-2026-114713 |
| containers > | adp > 1 > metrics > 0 > other > content > role | CISA Coordinator |
| containers > | adp > 1 > metrics > 0 > other > content > options > 0 > Exploitation | active |
| containers > | adp > 1 > metrics > 0 > other > content > options > 1 > Automatable | yes |
| containers > | adp > 1 > metrics > 0 > other > content > options > 2 > Technical Impact | total |
| containers > | adp > 1 > metrics > 0 > other > content > version | 2.0.3 |
| containers > | adp > 1 > metrics > 0 > other > content > timestamp | 2026-11-13T19:02:57.473163Z |
| containers > | adp > 1 > references > 0 > url | https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-114713 |
| containers > | adp > 1 > references > 0 > tags > 0 | government-resource |
| containers > | adp > 1 > title | CISA ADP Vulnrichment |
| containers > | adp > 1 > providerMetadata > orgId | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| containers > | adp > 1 > providerMetadata > shortName | CISA-ADP |
| containers > | adp > 1 > providerMetadata > dateUpdated | 2026-11-13T19:05:05.443Z |