VulnerabilityPublished 6 Feb 2026Updated 9 Feb 2026

CVE-2026-25644: datahub · Improper Certificate Validation

Affects datahubSource CVE Database V5

Not known to be exploited · CVSS 7.5 High : upgrade to 1.3.1.8 soon.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score

7.5High

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 27% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 1.3.1.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Feb 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade datahub and datahub-project/datahub to 1.3.1.8.

Affected software

Product	Affected	Fixed in
datahub-projectdatahub	Affected <1.3.1.8	Fixed in 1.3.1.8
GitHubdatahub-project/datahub`pkg:github/datahub-project/datahub`Other threats	Affected <1.3.1.8	Fixed in 1.3.1.8

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

European organizations should immediately upgrade any DataHub deployments to version 1.3.1.8 or later to apply the official patch that fixes the improper certificate validation issue. Beyond upgrading, organizations should enforce strict TLS configurations for LDAP connections, including disabling legacy or weak TLS versions and cipher suites to prevent downgrade attacks. Network segmentation should be implemented to limit exposure of LDAP traffic to trusted network zones only. Employing network monitoring and intrusion detection systems to detect unusual LDAP traffic patterns or potential MITM attempts can provide early warnings. Organizations should also conduct regular audits of their DataHub configurations and ensure that certificate validation is enabled and correctly configured. Where possible, use mutual TLS authentication between DataHub and LDAP servers to strengthen trust. Finally, educating network administrators and security teams about the risks of TLS downgrade attacks and proper certificate validation practices will help maintain a secure environment.

Description

DataHub is an open-source metadata platform. Prior to version 1.3.1.8, the LDAP ingestion source is vulnerable to MITM attack through TLS downgrade. This issue has been patched in version 1.3.1.8.

Impact

For European organizations, this vulnerability poses a significant risk to the confidentiality of sensitive metadata ingested via LDAP into DataHub platforms. Metadata platforms often contain critical organizational data about data assets, lineage, and governance, which if intercepted or manipulated, could lead to information leakage or further targeted attacks. Organizations relying on DataHub for metadata management in sectors such as finance, healthcare, and government are particularly at risk. The ability to perform a MITM attack without authentication means that attackers with network access—such as those inside compromised networks or with access to network infrastructure—can exploit this vulnerability. This could lead to exposure of sensitive information or facilitate lateral movement within networks. Given the widespread use of open-source tools like DataHub in European enterprises and public sector organizations, the impact could be broad, especially if patching is delayed. Additionally, compliance with GDPR and other data protection regulations could be jeopardized if metadata confidentiality is compromised.

CWE-295Improper Certificate Validation (opens in a new tab)
Base weaknessOWASP Top 10 A07:2025: Authentication Failures (opens in a new tab)
The product does not validate, or incorrectly validates, a certificate.
Architecture and Design · Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
OWASP Cheat Sheets
Transport Layer Protection (opens in a new tab)
TLS Cipher String (opens in a new tab)
OWASP Authentication (opens in a new tab)
OWASP ASVS 4.0.3
V9.2.1 (opens in a new tab)
V1.9.2 (opens in a new tab)
V2.8.5 (opens in a new tab)
Attack patterns
Creating a Rogue Certification Authority Certificate (opens in a new tab)
Signature Spoofing by Improper Validation (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

github.com/datahub-project/datahub/security/advisories/GHSA-j34h-x7qg-4qw5 (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 14 Feb 2026, 12:10 UTC

WeaknessesCWE-295

Technical details

References

Community reviews

Related threats