CVE-2023-26131 json
Algernon engine and themes vulnerable to Cross-site Scripting
published 2023-05-31 3 y ago modified 2026-06-17 4 mo ago also GHSA-g47h-fgcw-g4ph , EUVD-2023-1536
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
All versions of the package github.com/xyproto/algernon/engine; all versions of the package github.com/xyproto/algernon/themes are vulnerable to Cross-site Scripting (XSS) via the themes.NoPage(filename, theme) function due to improper user input sanitization. Exploiting this vulnerability is possible when a file/resource is not found.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 21 mo ago
Exploit prediction
0.69% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- security.snyk.io https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMXYPROTOALGERNONENGINE-3312111 referenced PoC, tagged "exploit" by a source, unverified
- security.snyk.io https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMXYPROTOALGERNONTHEMES-3312112 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P |
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| GitHub | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/xyproto/algernon | <=1.15.2 |
no fix listed |
Affected products
- n/a github.com/xyproto/algernon/engine
- n/a github.com/xyproto/algernon/themes
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
security.snyk.io
/vuln/SNYK-GOLANG-GITHUBCOMXYPROTOALGERNONENGINE-3312111
web, exploit, third-party-advisory
-
security.snyk.io
/vuln/SNYK-GOLANG-GITHUBCOMXYPROTOALGERNONTHEMES-3312112
web, exploit, third-party-advisory
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/engine/handlers.go%23L514
broken-link
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/themes/html.go%23L145
broken-link
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/engine/handlers.go%23L512
broken-link
-
nvd.nist.gov
/vuln/detail/CVE-2023-26131
advisory
-
github.com
/xyproto/algernon
package
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/engine/handlers.go#L512
web
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/engine/handlers.go#L514
web
-
github.com
/xyproto/algernon/blob/aab484608651852d02a8a93f40baf53ed93e639a/themes/html.go#L145
web
Sources
- CVE List CVE-2023-26131
- GitHub Advisory GHSA-g47h-fgcw-g4ph
- NVD CVE-2023-26131
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