CVE-2026-45768
published 2026-09-10CVE-2026-45768: Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to…
PriorityP345high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.70%
52.6th percentile
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -> any any (sid: 1; ldap.responses.count: >1024; bypass;)`.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| oisf | suricata | — | — |
| oisf | suricata | >= 8.0.0 < 8.0.5 | 8.0.5 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
vendor_redhat7.5HIGH
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VulDB
OISF Suricata up to 8.0.4 LDAP Transaction State denial of service
vuldb·2026-09-10·CVSS 7.5
CVE-2026-45768 [HIGH] OISF Suricata up to 8.0.4 LDAP Transaction State denial of service
A vulnerability marked as critical has been reported in OISF Suricata up to 8.0.4. Affected by this vulnerability is an unknown functionality of the component LDAP Transaction State. This manipulation causes denial of service.
The identification of this vulnerability is CVE-2026-45768. It is possible to initiate the attack remotely. There is no exploit available.
It is suggested to upgrade the affected component.
Red Hat
suricata: Suricata: Denial of Service via unbounded LDAP responses
vendor_redhat·2026-09-10·CVSS 7.5
CVE-2026-45768 [HIGH] CWE-770 suricata: Suricata: Denial of Service via unbounded LDAP responses
suricata: Suricata: Denial of Service via unbounded LDAP responses
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -> any any (sid: 1; ldap.responses.count: >1024; bypass;)`.
A flaw was found in Suricata, a network Intrusion Detection System, Intrusion Prevention System, and Network Security M
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-45768 suricata: Suricata: Denial of Service via unbounded LDAP responses
bugzilla·2026-09-11·CVSS 7.5
CVE-2026-45768 [HIGH] CVE-2026-45768 suricata: Suricata: Denial of Service via unbounded LDAP responses
CVE-2026-45768 suricata: Suricata: Denial of Service via unbounded LDAP responses
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Starting in version 8.0.0 and prior to version 8.0.5, LDAP transaction state could store an unbounded number of responses. Because LDAP can be processed over UDP, crafted traffic may cause Suricata to consume excessive memory, potentially resulting in denial of service. Version 8.0.5 contains a fix. As a workaround, disable LDAP application-layer parsing where it is not required. Alternatively, use a rule like `alert ldap any any -> any any (sid: 1; ldap.responses.count: >1024; bypass;)`.
Bugzilla
CVE-2025-45768 python-jwt: pyjwt Weak Encryption Vulnerability [fedora-42]
bugzilla·2025-08-01·CVSS 7.0
CVE-2025-45768 [HIGH] CVE-2025-45768 python-jwt: pyjwt Weak Encryption Vulnerability [fedora-42]
CVE-2025-45768 python-jwt: pyjwt Weak Encryption Vulnerability [fedora-42]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
The following link provides references to all essential vulnerability management information. If something is wrong or missing, please contact a member of PSIRT.
https://spaces.redhat.com/display/PRODSEC/Vulnerability+Management+-+Essential+Documents+for+Engineering+Teams
Discussion:
This message is a reminder that Fedora Linux 42 is nearing its end of life.
Fedora will stop maintaining and issuing updates for Fedora Linux 42 on 2026-05-13.
It is Fedora's policy to close all bug reports from
2026-09-10
Published