CVE-2026-2469
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-2469 is a high-severity Injection (CWE-74) vulnerability in Snyk (inferred from references). Its CVSS base score is 7.2 (High).
Operationally, ranked at the 33th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) — see the control section below for these in your framework.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
CVE-2026-2469 is an injection vulnerability (CWE-74) affecting versions of the PHP package directorytree/imapengine prior to 1.22.3. The issue resides in the id() function within ImapConnection.php, where user input is not properly escaped before being included in IMAP ID commands, allowing improper neutralization of special elements in output used by a downstream component. The vulnerability has a CVSS v3.1 base score of 7.6 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H).
An attacker with low privileges can exploit this over the network with low complexity and no user interaction required. By injecting quote characters (") or CRLF sequences (\r\n) into the input, they can execute arbitrary valid IMAP commands on the victim's mailbox, enabling actions such as reading or deleting emails, terminating the victim's session, or other mailbox manipulations.
Mitigation involves upgrading to version 1.22.3 or later, where the fix is implemented via commit 87fca56affd9527e6907a705e6d600c5174d9a5a and pull request #150 in the DirectoryTree/ImapEngine repository. Additional details are available in the Snyk advisory (SNYK-PHP-DIRECTORYTREEIMAPENGINE-15274300) and a related GitHub Gist.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-6070
Vulnerability Data
Versions of the package directorytree/imapengine before 1.22.3 are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') via the id() function in ImapConnection.php due to improperly escaping user input before including it in IMAP…
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ID commands. This allows attackers to read or delete victim's emails, terminate the victim's session or execute any valid IMAP command on victim's mailbox by including quote characters " or CRLF sequences \r\n in the input.
- CWE(s)
Related Threats
CVEs Like This One
Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
SI-10 directly requires validation of information inputs to reject malformed or special-element content before it reaches downstream parsers.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Security testing in development catches injection vulnerabilities before release.
Monitoring activities can identify active injection attacks after they occur.
Secure coding standards require proper neutralization of special elements, directly addressing CWE-74.
Hardening callouts derived
DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.
- No fine-grained STIG row for CWE-74, a class-level weakness, and none of its children carries one either.