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CVE-2026-54199· NVD / CVE Program· CNA NCSC.ch

TeamDavid: Header Injection through request body in link storing functionality

Tobit Laboratories AG TeamDavid's Webbox is vulnerable to HTTP header injection through the request body in the application's link storing functionality (//ServerClient_celink.htm), which is appended to the redirect target in the 302 HTTP response. If a line feed is added, this will also be added to the redirect link, resulting in the ability to control the response headers. This issue affects TeamDavid before Rollout 528. Starting with Rollout 528 (June 30, 2026), the affected functionality is disabled by default and the vulnerabilities are therefore no longer exposed through this functionality.

MediumCVSS 5.3 · v4.0—No exploit No fix recorded

Noroxi analysis

No Noroxi analysis for this record yet

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Published
Aug 7, 2026
Updated
Sep 7, 2026
EPSS
0.4% · 36th percentile
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Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · NCSC.ch
5.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (NCSC.ch). Independent of NVD's CPE analysis and usually ahead of it.

  • Tobit Laboratories AG TeamDavid

    • before Rollout 528affected

Same product

tobit laboratories ag: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-54212TeamDavid: Buffer Overflow in JSON-parsing
    38Monitor
  • CVE-2026-54211TeamDavid: Buffer Overflow in multiple form data parameters
    38Monitor
  • CVE-2026-54210TeamDavid: Buffer Overflow in file names of file upload functionalities
    38Monitor
  • CVE-2026-54213TeamDavid: Denial of Service via endpoint 'internalRestart'
    36Monitor
  • CVE-2026-54203TeamDavid: Memory Leak leaking sensitive information
    36Monitor
  • CVE-2026-54218TeamDavid: Weak Cryptography and Insecure Password Storage
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-542080 days apartTeamDavid: Arbitrary File Write leading to Stored XSS
    34Monitor
  • CVE-2026-542040 days apartTeamDavid: Server-Side Request Forgery (SSRF) via 'pathnameroot' parameter in search functionality
    30Monitor
  • CVE-2026-542050 days apartTeamDavid: Server-Side Request Forgery (SSRF) via 'pathname' parameter in link storing functionality
    25Monitor
  • CVE-2026-542060 days apartTeamDavid: Server-Side Request Forgery (SSRF) via 'pathname' parameter in sending functionality
    25Monitor
  • CVE-2026-542070 days apartTeamDavid: Server-Side Request Forgery (SSRF) via 'pathname' parameter in move archive functionality
    25Monitor
  • CVE-2026-542170 days apartTeamDavid: Stored XSS in web application
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
P
Scope
X

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records