VulnerabilityPublished 8 Apr 2026

CVE-2026-5808: openstatusHQ openstatus · Cross-site Scripting

Affects openstatusHQ openstatusSource CVE Database V5

Compare

Not known to be exploited · CVSS 5.3 Medium.

Data as of 30 Oct 2026, 11:52 UTC

CVSS 4.0 base score

5.3Medium

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

EPSS: 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X

Attack Vector: Network
Attack Complexity: Low
Attack Requirements: None
Privileges Required: None
User Interaction: Passive
Vulnerable system confidentiality: None
Vulnerable system integrity: Low
Vulnerable system availability: None
Subsequent system confidentiality: None
Subsequent system integrity: None
Subsequent system availability: None

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

Attack Vector: Network: The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, 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: The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Attack Requirements: None: The successful attack does not depend on the deployment and execution conditions of the vulnerable system. The attacker can expect to be able to reach the vulnerability and execute the exploit under all or most instances of the vulnerability.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction: Passive: Successful exploitation of this vulnerability requires limited interaction by the targeted user with the vulnerable system and the attacker’s payload. These interactions would be considered involuntary and do not require that the user actively subvert protections built into the vulnerable system.
Vulnerable system confidentiality: None: There is no loss of confidentiality within the Vulnerable System.
Vulnerable system integrity: Low: Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact to the Vulnerable System.
Vulnerable system availability: None: There is no impact to availability within the Vulnerable System.
Subsequent system confidentiality: None: There is no loss of confidentiality within the Subsequent System or all confidentiality impact is constrained to the Vulnerable System.
Subsequent system integrity: None: There is no loss of integrity within the Subsequent System or all integrity impact is constrained to the Vulnerable System.
Subsequent system availability: None: There is no impact to availability within the Subsequent System or all availability impact is constrained to the Vulnerable System.

Definitions: FIRST CVSS v4.0 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 8 Apr 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 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.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), 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

Affected software

Product	Affected	Fixed in
openstatusHQopenstatus	Affected =1b678e71a85961ae319cbb214a8eae634059330c	Fixed in–

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

AI-suggested

A patch fixing this vulnerability has been released by the vendor as identified by commit 43d9b2b9ef8ae1a98f9bdc8a9f86d6a3dfaa2dfb. Users of openstatusHQ openstatus should update to the latest rolling release that includes this patch to remediate the issue. Since the product uses a rolling release model, ensure that the deployment is updated accordingly. No additional mitigation steps are specified by the vendor.

Description

CVE-2026-5808 is a cross-site scripting (XSS) vulnerability in openstatusHQ openstatus affecting the Onboarding Endpoint component. The issue arises from improper handling of the callbackURL argument in the file apps/dashboard/src/app/(dashboard)/onboarding/client.tsx, allowing remote attackers to inject malicious scripts. The product uses a rolling release model, so specific version numbers are not fixed, but a patch identified by commit 43d9b2b9ef8ae1a98f9bdc8a9f86d6a3dfaa2dfb has been released by the vendor. The vendor responded promptly and professionally to the report and issued a fix quickly. The vulnerability has a medium severity with a CVSS 4.0 base score of 5.3. No known exploits are reported in the wild at this time.

Impact

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected application, potentially leading to session hijacking, information disclosure, or other client-side attacks. However, the impact is limited to the scope of the XSS vulnerability and does not involve privilege escalation or server compromise. No known active exploitation has been reported.

Summary

This vulnerability in openstatusHQ openstatus up to commit 1b678e71a85961ae319cbb214a8eae634059330c allows remote attackers to perform cross-site scripting by manipulating the callbackURL parameter in the Onboarding Endpoint component (apps/dashboard/src/app/(dashboard)/onboarding/client.tsx). The product is delivered via a rolling release process, and the vendor has released a patch identified by commit 43d9b2b9ef8ae1a98f9bdc8a9f86d6a3dfaa2dfb to address this issue. The vendor's quick and professional response indicates that the vulnerability is now fixed in the updated codebase.

References

Community reviews

Loading reviews…

Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 16 Apr 2026, 12:18 UTC

Technical details

References

Community reviews

Related threats