3.6

CVE-2026-49356: Babel: Arbitrary File Read via sourceMappingURL Comment in @babel/core

Analyzed
AliasesUBUNTU-CVE-2026-49356DEBIAN-CVE-2026-49356CGA-22j4-hgfc-fr32
Published 22-06-2026Last modified 22-06-2026

Vulnerability summary

CVE-2026-49356 is a low (CVSS 3.6) vulnerability in babel. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4.3% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 3.2, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
3.6/10
010
Low · v3.1 (NVD)
EPSS score
0.15%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 3 · Related 4
OPENSUSE-SU-2026:11680-1OPENSUSE-SU-2026:12070-1OPENSUSE-SU-2026:21448-1CGA-4MWV-6XRJ-9CG9

Timeline

  1. 22-06-2026
    PublishedVulnerability first disclosed.
  2. 22-06-2026
    Last modifiedVulnerability information updated.

Description

Babel is a compiler for writing next generation JavaScript. Prior to 8.0.0-rc.6 and 7.29.6, @babel/core affected by an arbitrary file read via a sourceMappingURL comment. Using @babel/core to compile maliciously crafted code can allow an attacker to read any source map from the system that is running Babel, if the attacker controls the input source code, can read the output source code, and knows the path of the source map file that they want to read. This vulnerability is fixed in 8.0.0-rc.6 and 7.29.6.

CVSS metrics

7 scores · 7 sources · 1 version

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard75 products
  • airflow-2All versions (No fix recorded)
  • airflow-3< 3.2.2-r8
  • airflow-core-2All versions (No fix recorded)
  • arangodb-3.11< 3.11.14.5-r31
  • arangodb-3.12< 3.12.11-r0
Wolfi22 products
  • airflow-3< 3.2.2-r8
  • katib-earlystopping< 0.19.0-r31
  • katib-suggestion-goptuna-compat< 0.19.0-r40
  • katib-suggestion-hyperband< 0.19.0-r31
  • katib-suggestion-hyperopt< 0.19.0-r40 | < 0.19.0-r31
@babel1 product
  • core≥ 8.0.0-alpha.0, < 8.0.0-rc.6 | < 7.29.6
Babel1 product
  • babel≥ 8.0.0-alpha.0, < 8.0.0-rc.5 | < 7.29.6 | 8.0.0:alpha0 | 8.0.0:alpha1 | 8.0.0:alpha10 | 8.0.0:alpha11 | 8.0.0:alpha12 | 8.0.0:alpha13 | 8.0.0:alpha14 | 8.0.0:alpha15 | 8.0.0:alpha16 | 8.0.0:alpha17 | 8.0.0:alpha2 | 8.0.0:alpha3 | 8.0.0:alpha4 | 8.0.0:alpha5 | 8.0.0:alpha6 | 8.0.0:alpha7 | 8.0.0:alpha8 | 8.0.0:alpha9 | 8.0.0:beta0 | 8.0.0:beta1 | 8.0.0:beta2 | 8.0.0:beta3 | 8.0.0:beta4 | 8.0.0:rc1 | 8.0.0:rc2 | 8.0.0:rc3 | 8.0.0:rc4 | 8.0.0:rc5
Debian1 product
  • node-babel7All versions (No fix recorded) | < 8.0.4+ds1+~cs177.303.116-2
Ubuntu1 product
  • babelAll versions (No fix recorded)

6 vendors · 101 products

References

8 links