Security readout for executives and security teams
Plain-English summary
Akaunting 2.1.12 and earlier had a stored cross-site scripting flaw in invoice footer handling. A highly privileged user could save hostile content that later runs when another user views the affected invoice area. This is not listed as actively exploited in the provided sources, but it can threaten sensitive business data in billing workflows.
Executive priority
Treat as a moderate-priority remediation for finance systems. Patch promptly during the normal maintenance window, sooner for internet-facing deployments or environments with weak administrative account controls.
Technical view
CVE-2021-36805 is CWE-79 persistent XSS in Akaunting sales invoice processing, specifically invoice footer content. CVSS 3.1 is 5.2: network reachable, low complexity, high privileges required, user interaction required, unchanged scope, high confidentiality impact, low integrity impact, no availability impact. The issue is reported fixed in Akaunting 2.1.13.
Likely exposure
Exposure is limited to organizations running Akaunting 2.1.12 or earlier, especially self-hosted or internet-accessible deployments where privileged users can edit invoice footer content and other users view invoices.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. The CVSS vector indicates exploitation requires high privileges and user interaction, reducing broad attack likelihood but still creating risk if an admin account is misused or compromised.
Researcher notes
Evidence is narrow: the bundle identifies Akaunting 2.1.12 and earlier, CWE-79, CVSS details, and a fixed version. No CPEs, exploit indicators, or broader product impacts are provided, so validation should focus on confirmed Akaunting deployments only.
Mitigation direction
- Upgrade Akaunting to version 2.1.13 or later.
- Review Akaunting vendor guidance for any related security instructions.
- Restrict invoice customization privileges to trusted administrative users.
- Review existing invoice footer content for unexpected active content.
- Monitor billing application accounts for suspicious privileged changes.
Validation and detection
- Inventory all Akaunting deployments and record exact versions.
- Confirm production instances are no longer running 2.1.12 or earlier.
- Identify who can edit invoice footer or sales invoice templates.
- Review recent invoice footer changes for unauthorized content.
- Confirm rendered invoice views encode or neutralize footer content.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-36805 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.2 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N0.94.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.2MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.rapid7.com/blog/post/2021/07/27/multiple-open-source-web-app-vulnerabilities-fixed/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.