How severe is CVE-2026-45778?

CVE-2026-45778 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-45778 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-45778?

CVE-2026-45778 affects Buffalo Open Xdmod. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-45778?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-45778 have an EU (EUVD) identifier?

Yes. CVE-2026-45778 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34906.

When was CVE-2026-45778 published?

CVE-2026-45778 was published on 2026-06-05 and last updated on 2026-07-23.

CVE-2026-45778

CVE-2026-45778 is a medium-severity vulnerability in Buffalo Open Xdmod with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v4: 8.6
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34906
Weakness: CWE-79
Affected product: Buffalo Open Xdmod
Published: 2026-06-05
Last modified: 2026-07-23

Description

OpenXDMoD is an open framework for collecting and analyzing HPC metrics. Prior to version 11.0.3, an authenticated attacker can inject malicious JavaScript into their Open XDMoD user profile and abuse the password reset functionality to email a link to an HTML page, which when visited by the victim, reflects and executes the unsanitized payload in the victim's browser, potentially leading to credential capture and Open XDMoD account takeover. All deployments of Open XDMoD prior to 11.0.3 are impacted. This issue was reported privately on 2026-04-06, and at this time there is no evidence that this vulnerability has been exploited in the wild. The vulnerability was patched in Open XDMoD 11.0.3 on 2026-05-12. As a workaround, apply the patch manually.

Frequently asked questions

What is CVE-2026-45778?: OpenXDMoD is an open framework for collecting and analyzing HPC metrics. Prior to version 11.0.3, an authenticated attacker can inject malicious JavaScript into their Open XDMoD user profile and abuse the password reset functionality to email a link to an HTML page, which when visited by the victim, reflects and executes the unsanitized payload in the victim's browser, potentially leading to credential capture and Open XDMoD account takeover. All deployments of Open XDMoD prior to 11.0.3 are impacted. This issue was reported privately on 2026-04-06, and at this time there is no evidence that this vulnerability has been exploited in the wild. The vulnerability was patched in Open XDMoD 11.0.3 on 2026-05-12. As a workaround, apply the patch manually.
How severe is CVE-2026-45778?: CVE-2026-45778 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-45778 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-45778?: CVE-2026-45778 affects Buffalo Open Xdmod. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-45778?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-45778 have an EU (EUVD) identifier?: Yes. CVE-2026-45778 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34906.
When was CVE-2026-45778 published?: CVE-2026-45778 was published on 2026-06-05 and last updated on 2026-07-23.

References

https://github.com/ubccr/xdmod/security/advisories/GHSA-3pv7-qvc3-h527

Affected products (1)

cpe:2.3:a:buffalo:open_xdmod:*:*:*:*:*:*:*:*

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