CVE-2026-29138 | SEPPmail Secure Email Gateway up to 15.0.2 PGP Signature ldap injection

VDB-354847 · CVE-2026-29138 · GCVE-0-2026-29138 SEPPMAIL SECURE EMAIL GATEWAY UP TO 15.0.2 PGP SIGNATURE LDAP INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 1.26+ Summaryinfo A vulnerability has been found in SEPPmail Secure Email Gateway up to 15.0.2 and classified as problematic. This impacts an unknown function of the component PGP Signature Handler. This manipulation causes ldap injection. This vulnerability is tracked as CVE-2026-29138. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded. Detailsinfo A vulnerability has been found in SEPPmail Secure Email Gateway up to 15.0.2 and classified as problematic. Affected by this vulnerability is an unknown part of the component PGP Signature Handler. The manipulation with an unknown input leads to a ldap injection vulnerability. The CWE definition for the vulnerability is CWE-90. The product constructs all or part of an LDAP query using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended LDAP query when it is sent to a downstream component. As an impact it is known to affect integrity. The summary by CVE is: SEPPmail Secure Email Gateway before version 15.0.3 allows attackers with a specially crafted email address to claim another user's PGP signature as their own. The weakness was disclosed by Andris Suter-Dörig. It is possible to read the advisory at downloads.seppmail.com. This vulnerability is known as CVE-2026-29138 since 03/04/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK. Upgrading to version 15.0.3 eliminates this vulnerability. Productinfo Vendor SEPPmail Name Secure Email Gateway Version 15.0.0 15.0.1 15.0.2 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Ldap injection CWE: CWE-90 / CWE-74 / CWE-707 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Secure Email Gateway 15.0.3 Timelineinfo 03/04/2026 CVE reserved 04/02/2026 +28 days Advisory disclosed 04/02/2026 +0 days VulDB entry created 04/02/2026 +0 days VulDB entry last update Sourcesinfo Advisory: downloads.seppmail.com Researcher: Andris Suter-Dörig Status: Confirmed CVE: CVE-2026-29138 (🔒) GCVE (CVE): GCVE-0-2026-29138 GCVE (VulDB): GCVE-100-354847 Entryinfo Created: 04/02/2026 11:23 Changes: 04/02/2026 11:23 (68) Complete: 🔍 Cache ID: 99:11E:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸