Security readout for executives and security teams
Plain-English summary
Omega-PSIR has a reflected cross-site scripting issue in the lang parameter. A victim must open a malicious link for attacker-controlled JavaScript to run in that user’s browser. The source bundle says the issue is fixed in version 4.6.7.
Executive priority
Prioritize patching exposed Omega-PSIR instances, especially where users access the system through browsers. Business risk is moderate because exploitation needs user interaction, but successful attacks can affect user sessions and trust in the application.
Technical view
CVE-2026-1434 is CWE-79 reflected XSS affecting Omega-PSIR 4.5.9 from Politechnika Warszawska. CVSS 4.0 score is 5.1 with network attack vector, low complexity, no privileges required, and user interaction required. Impact is limited to low confidentiality and integrity effects on the subsequent system context.
Likely exposure
Organizations running Omega-PSIR 4.5.9 are the only affected version identified in the provided CVE data. Default status is listed as unaffected for other versions, but environments should confirm deployed versions against vendor or CERT.PL guidance.
Exploitation context
The attack requires social engineering or another way to get a user to open a crafted URL. The source bundle does not indicate active exploitation, and KEV is false. No public exploit status is provided beyond the advisory description.
Researcher notes
The available record identifies only the lang parameter and affected version 4.5.9. Avoid assuming broader version impact without vendor confirmation. No exploit code, indicators of compromise, or detailed patch notes were included in the provided sources.
Mitigation direction
- Upgrade Omega-PSIR to version 4.6.7 or later if running an affected version.
- Review CERT.PL and vendor guidance for any environment-specific remediation notes.
- Treat untrusted links to Omega-PSIR as risky until patched.
Validation and detection
- Inventory Omega-PSIR deployments and record exact versions.
- Confirm whether any instance runs version 4.5.9.
- Verify patched systems report version 4.6.7 or later.
- Check web access logs for suspicious lang parameter activity, if 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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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 lookupCVE-2026-1434 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
- Medium
- CVSS
- 5.1 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/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:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N——Primary CVE scoreVulnerability scoring details
Base CVSS 4.0 score
5.1MediumVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Source materials
- CVE List V5 sourceCVE List V5
- https://cert.pl/posts/2026/02/CVE-2026-1434CVE reference · third-party-advisory
- https://www.omegapsir.io/CVE reference · product
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 Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.