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CVE-2026-53641

FOSSBilling is a free, open-source billing and client management system. Versions 0.6.0 through 0.7.2 have a stored cross-site scripting (XSS) vulnerability in the client-facing email history views of FOSSBilling. Email HTML content (`content_html`) is rendered into a JavaScript template literal using the `|raw` filter, bypassing all output escaping. An attacker with admin access can inject malicious JavaScript payloads into email content that execute in the browser of any client who views their
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:78a16f1c6b00a6e5d634f2e80eaec1dd50261374dba82adb21a69beaecb682fb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-838","description":"CWE-838: Inappropriate Encoding for Output Context","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"product":"FOSSBilling","vendor":"FOSSBilling","versions":[{"status":"affected","version":">= 0.6.0, < 0.8.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":4.8,"baseSeverity":"MEDIUM","privilegesRequired":"HIGH","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-838","description":"CWE-838: Inappropriate Encoding for Output Context","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/problemTypes/1/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-q6c8-6r72-35f7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/FOSSBilling/FOSSBilling/security/advisories/GHSA-q6c8-6r72-35f7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:912c3c27a9a64df417f5086cb254ea5b66ea777f6e2265aac6fe5b0fa6a5a97a · sha256:a1d70324255a7a54… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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