CVE-2026-25364VulnerabilityPublished 19 Feb 2026Updated 28 Apr 2026

CVE-2026-25364: Client Invoicing by Sprout Invoices (WordPress plugin) · Missing Authorization

Affects Client Invoicing by Sprout Invoices (WordPress plugin)Source CVE Database V5

Not known to be exploited · CVSS 5.3 Medium : upgrade to 20.8.9 when convenient.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 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 16% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 20.8.9

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
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: None: There is no loss of confidentiality within the impacted component.
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 on 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 19 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 2026-10-25.

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 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 Client Invoicing by Sprout Invoices (WordPress plugin) to 20.8.9.

Affected software

Product	Affected	Fixed in
BoldGridClient Invoicing by Sprout Invoices	Affected <20.8.9	Fixed in 20.8.9

AI-suggested

If you cannot patch yet, restrict access to the affected plugin and monitor for unusual activity related to invoicing functions. Avoid exposing the plugin to untrusted networks or users.

Description

Missing Authorization vulnerability in BoldGrid Client Invoicing by Sprout Invoices sprout-invoices allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Client Invoicing by Sprout Invoices: from n/a through <= 20.8.8.

Impact

The vulnerability allows unauthorized modification or manipulation of invoicing data due to missing authorization controls, impacting data integrity. There is no impact on confidentiality or availability. No known exploitation in the wild has been reported.

Summary

This vulnerability in BoldGrid Client Invoicing by Sprout Invoices arises from missing authorization checks, enabling attackers to bypass access control restrictions. The issue affects all versions up to 20.8.8. The CVSS 3.1 base score is 5.3 (medium), reflecting network attack vector, low attack complexity, no privileges or user interaction required, and impact limited to integrity.

References

patchstack.com/database/Wordpress/Plugin/sprout-invoices/vulnerability/wordpress-client-invoicing-by-sprout-invoices-plugin-20-8-8-broken-access-control-vulnerability?_s_id=cve (opens in a new tab)

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 29 Apr 2026, 10:11 UTC

Technical details

References

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