CVE-2026-48248Network attack vector

On-path data disclosure via disabled TLS validation

Published May 21, 2026 · Updated May 21, 2026

Improper certificate validation in Open ISES Tickets before 3.44.2 allows man-in-the-middle attackers to read login traffic. incs/login.inc.php sets CURLOPT_SSL_VERIFYPEER to false and omits CURLOPT_SSL_VERIFYHOST for outbound HTTPS requests. The attacker must control the network path between the server and remote endpoint; exposed data includes API keys or session-bearing material.

CVSS severity8.2
High
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Open ISES Tickets before 3.44.2 allows man-in-the-middle attackers to read login traffic. incs/login.inc.php sets CURLOPT_SSL_VERIFYPEER to false and omits CURLOPT_SSL_VERIFYHOST for outbound HTTPS requests. The attacker must control the network path between the server and remote endpoint; exposed data includes API keys or session-bearing material.

The record

CVE
CVE-2026-48248
Published
May 21, 2026
Updated
May 21, 2026
Vendor
Open ISES
Product
Tickets CAD
Classifications
CWE-295, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 21, 2026CVE publishedPublication date reported by the CVE source.
  2. May 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <3.44.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open ISES · Tickets CADversion=0 <3.44.2

Published CVSS scores

8.2VulnCheckCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
5.9VulnCheckCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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