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CVE-2026-27210

Pannellum is a lightweight, free, and open source panorama viewer for the web. In versions 3.5.0 through 2.5.6, the hot spot attributes configuration property allowed any attribute to be set, including HTML event handler attributes, allowing for potential XSS attacks. This affects websites hosting the standalone viewer HTML file and any other use of untrusted JSON config files (bypassing the protections of the escapeHTML parameter). As certain events fire without any additional user interaction,
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:d063e6b978ab47eba2999f08c69f7836104f694fc5c30f92439040bd5598da3b
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"pannellum","vendor":"mpetroff","versions":[{"status":"affected","version":">= 2.5.0, < 2.5.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4e7881e65717bec1cd4f3a9773f5fd10688616679d53e7cdd99110865227d671 · sha256:282ad1b737b121a3… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4e7881e65717bec1cd4f3a9773f5fd10688616679d53e7cdd99110865227d671 · sha256:282ad1b737b121a3… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"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:v2:4e7881e65717bec1cd4f3a9773f5fd10688616679d53e7cdd99110865227d671 · sha256:282ad1b737b121a3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/mpetroff/pannellum/commit/9391ef8da6a6a98c6a9f8c97f101adb900523681","tags":["x_refsource_MISC"],"url":"https://github.com/mpetroff/pannellum/commit/9391ef8da6a6a98c6a9f8c97f101adb900523681"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7881e65717bec1cd4f3a9773f5fd10688616679d53e7cdd99110865227d671 · sha256:282ad1b737b121a3… · /containers/cna/references/1
{"name":"https://github.com/mpetroff/pannellum/security/advisories/GHSA-8423-w5wx-h2r6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mpetroff/pannellum/security/advisories/GHSA-8423-w5wx-h2r6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4e7881e65717bec1cd4f3a9773f5fd10688616679d53e7cdd99110865227d671 · sha256:282ad1b737b121a3… · /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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