Security readout for executives and security teams
Plain-English summary
CVE-2026-22243 is a high-severity SQL injection flaw in EGroupware. An authenticated user could manipulate database queries through Nextmatch filter processing, potentially exposing or changing application data. EGroupware patched the issue in versions 23.1.20260113 and 26.0.20260113.
Executive priority
Treat this as a near-term patch priority for any production EGroupware system. The flaw requires a login, but it can directly affect database data. Upgrade during the next urgent maintenance window, sooner for externally reachable deployments.
Technical view
The vulnerability is CWE-89 SQL injection in EGroupware core Nextmatch filter processing before 23.1.20260113 and 26.0.20260113. JSON decoding can convert numeric strings to integers, bypassing an is_int() security check and allowing attacker-controlled SQL in WHERE clauses. CVSS v4.0 score is 8.7 with network access and low privileges required.
Likely exposure
Organizations running EGroupware versions earlier than 23.1.20260113 or 26.0.20260113 are exposed. The attacker must be authenticated, so risk is highest where many users, external users, or compromised accounts can access EGroupware.
Exploitation context
The provided sources do not report active exploitation, and CISA KEV status is false. Exploitation requires authenticated access but no user interaction. Successful abuse could affect confidentiality, integrity, and availability of the EGroupware database.
Researcher notes
Key assessment points are authenticated attack surface, installed EGroupware branch, and whether Nextmatch filter processing is reachable by lower-privileged users. Public sources identify the root cause and fixed versions but do not provide evidence of exploitation in the wild.
Mitigation direction
- Upgrade EGroupware to 23.1.20260113 or 26.0.20260113, as applicable.
- Review the GitHub security advisory for vendor-specific remediation details.
- Prioritize internet-accessible or broadly user-accessible EGroupware deployments first.
- If immediate upgrade is not possible, check vendor guidance for supported temporary controls.
Validation and detection
- Inventory all EGroupware deployments and record exact installed versions.
- Confirm no deployment is running below 23.1.20260113 or 26.0.20260113.
- Verify the relevant patched release is installed after maintenance.
- Review EGroupware authentication and database logs for unusual activity, where available.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-22243 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/EGroupware/egroupware/security/advisories/GHSA-rvxj-7f72-mhrxCVE reference · x_refsource_CONFIRM
- https://github.com/EGroupware/egroupware/releases/tag/23.1.20260113CVE reference · x_refsource_MISC
- https://github.com/EGroupware/egroupware/releases/tag/26.0.20260113CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.