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PatchSiren cyber security CVE debrief

CVE-2026-48247 Open ISES CVE debrief

CVE-2026-48247 affects Open ISES Tickets before 3.44.2, where shared helper code in incs/functions.inc.php disabled TLS certificate verification for outbound HTTPS requests. That creates a classic man-in-the-middle risk: an attacker on the path between the server and the remote endpoint can present a forged certificate and potentially observe or alter requests and responses in transit. The supplied advisory ties the fix to version 3.44.2, so upgrading is the primary remediation.

Vendor
Open ISES
Product
Tickets
CVSS
HIGH 8.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-05-21
Original CVE updated
2026-07-23
Advisory published
2026-05-21
Advisory updated
2026-07-23

Who should care

Administrators, developers, and operators running Open ISES Tickets instances that make outbound HTTPS requests through the shared helper functions, especially if those requests carry API keys, tokens, or session-bearing data.

Technical summary

According to the supplied description, incs/functions.inc.php set CURLOPT_SSL_VERIFYPEER to false and did not set CURLOPT_SSL_VERIFYHOST when issuing general-purpose outbound HTTPS requests. That means certificate identity and chain validation were not enforced for those calls, weakening transport security and exposing traffic to interception or modification by a network-positioned attacker. The NVD record classifies the issue as CVE-2026-48247 with CWE-295 and lists the vulnerability status as Deferred.

Defensive priority

High. The flaw directly undermines TLS trust for outbound connections and can expose sensitive credentials or application data if those requests traverse an attacker-controlled or compromised network path.

Recommended defensive actions

  • Upgrade Open ISES Tickets to version 3.44.2 or later.
  • Review any custom code or integrations that rely on the shared outbound HTTPS helper functions.
  • Confirm that outbound HTTPS requests enforce certificate verification and hostname validation.
  • Assume any credentials or session-bearing data sent over affected requests may have been exposed if interception is suspected and rotate them accordingly.
  • Validate the fix in staging and check logs or integration error handling for unexpected TLS failures after remediation.

Evidence notes

The CVE description states that versions before 3.44.2 disabled TLS certificate verification in incs/functions.inc.php by setting CURLOPT_SSL_VERIFYPEER to false and omitting CURLOPT_SSL_VERIFYHOST for outbound HTTPS requests. The supplied references include a fixing commit in the openises/tickets repository and the v3.44.2 release tag, which support the remediation version. NVD metadata marks the record as Deferred and attributes CWE-295.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-48247 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-48247

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-48247 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-48247

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.