CVE-2026-78209Disclosure

LOWCVSS 8.4 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

exceljs through 4.4.0 fails to neutralize leading equals, plus, minus, or at signs in cell values written to CSV output. Attackers who can influence exported cell values can inject formulas that execute when the CSV file is opened in a spreadsheet application, potentially exfiltrating data or performing other malicious actions.

Back to dashboard

0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-1236

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-78209

Full discourse1 post

Vulmon Vulnerability Feed@VulmonFeeds46d
Disclosure
CVE-2026-78209 CSV Formula Injection in exceljs-hardened Versions Before 5.0.0 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-78209
Post summary
The post announces CVE‑2026‑78209 as a CSV formula injection flaw in exceljs‑hardened versions prior to 5.0.0, but it offers no exploit code, patch info, or evidence of active exploitation.
00000121
4.1K followersView on X

Explore more

Back to dashboard